OI-codes/Codeforces/1663/G/G.js

/*! JSFuck 0.5.0 - http://jsfuck.com */

const MIN = 32,
    MAX = 126;

const SIMPLE = {
    false: '![]',
    true: '!![]',
    undefined: '[][[]]',
    NaN: '+[![]]',
    Infinity: '+(+!+[]+(!+[]+[])[!+[]+!+[]+!+[]]+[+!+[]]+[+[]]+[+[]]+[+[]])', // +"1e1000"
};

const CONSTRUCTORS = {
    Array: '[]',
    Number: '(+[])',
    String: '([]+[])',
    Boolean: '(![])',
    Function: '[]["flat"]',
    RegExp: 'Function("return/"+false+"/")()',
    Object: '[]["entries"]()',
};

const MAPPING = {
    a: '(false+"")[1]',
    b: '([]["entries"]()+"")[2]',
    c: '([]["flat"]+"")[3]',
    d: '(undefined+"")[2]',
    e: '(true+"")[3]',
    f: '(false+"")[0]',
    g: '(false+[0]+String)[20]',
    h: '(+(101))["to"+String["name"]](21)[1]',
    i: '([false]+undefined)[10]',
    j: '([]["entries"]()+"")[3]',
    k: '(+(20))["to"+String["name"]](21)',
    l: '(false+"")[2]',
    m: '(Number+"")[11]',
    n: '(undefined+"")[1]',
    o: '(true+[]["flat"])[10]',
    p: '(+(211))["to"+String["name"]](31)[1]',
    q: '("")["fontcolor"]([0]+false+")[20]',
    r: '(true+"")[1]',
    s: '(false+"")[3]',
    t: '(true+"")[0]',
    u: '(undefined+"")[0]',
    v: '(+(31))["to"+String["name"]](32)',
    w: '(+(32))["to"+String["name"]](33)',
    x: '(+(101))["to"+String["name"]](34)[1]',
    y: '(NaN+[Infinity])[10]',
    z: '(+(35))["to"+String["name"]](36)',

    A: '(NaN+[]["entries"]())[11]',
    B: '(+[]+Boolean)[10]',
    C: 'Function("return escape")()(("")["italics"]())[2]',
    D: 'Function("return escape")()([]["flat"])["slice"]("-1")',
    E: '(RegExp+"")[12]',
    F: '(+[]+Function)[10]',
    G: '(false+Function("return Date")()())[30]',
    H: null,
    I: '(Infinity+"")[0]',
    J: null,
    K: null,
    L: null,
    M: '(true+Function("return Date")()())[30]',
    N: '(NaN+"")[0]',
    O: '(+[]+Object)[10]',
    P: null,
    Q: null,
    R: '(+[]+RegExp)[10]',
    S: '(+[]+String)[10]',
    T: '(NaN+Function("return Date")()())[30]',
    U: '(NaN+Object()["to"+String["name"]]["call"]())[11]',
    V: null,
    W: null,
    X: null,
    Y: null,
    Z: null,

    ' ': '(NaN+[]["flat"])[11]',
    '!': null,
    '"': '("")["fontcolor"]()[12]',
    '#': null,
    $: null,
    '%': 'Function("return escape")()([]["flat"])[21]',
    '&': '("")["fontcolor"](")[13]',
    "'": null,
    '(': '([]["flat"]+"")[13]',
    ')': '([0]+false+[]["flat"])[20]',
    '*': null,
    '+': '(+(+!+[]+(!+[]+[])[!+[]+!+[]+!+[]]+[+!+[]]+[+[]]+[+[]])+[])[2]',
    ',': '[[]]["concat"]([[]])+""',
    '-': '(+(.+[0000001])+"")[2]',
    '.': '(+(+!+[]+[+!+[]]+(!![]+[])[!+[]+!+[]+!+[]]+[!+[]+!+[]]+[+[]])+[])[+!+[]]',
    '/': '(false+[0])["italics"]()[10]',
    ':': '(RegExp()+"")[3]',
    ';': '("")["fontcolor"](NaN+")[21]',
    '<': '("")["italics"]()[0]',
    '=': '("")["fontcolor"]()[11]',
    '>': '("")["italics"]()[2]',
    '?': '(RegExp()+"")[2]',
    '@': null,
    '[': '([]["entries"]()+"")[0]',
    '\\': '(RegExp("/")+"")[1]',
    ']': '([]["entries"]()+"")[22]',
    '^': null,
    _: null,
    '`': null,
    '{': '(true+[]["flat"])[20]',
    '|': null,
    '}': '([]["flat"]+"")["slice"]("-1")',
    '~': null,
};

const GLOBAL = 'Function("return this")()';

function fillMissingDigits() {
    var output, number, i;

    for (number = 0; number < 10; number++) {
        output = '+[]';

        if (number > 0) {
            output = '+!' + output;
        }
        for (i = 1; i < number; i++) {
            output = '+!+[]' + output;
        }
        if (number > 1) {
            output = output.substr(1);
        }

        MAPPING[number] = '[' + output + ']';
    }
}

function replaceMap() {
    var character = '',
        value,
        i,
        key;

    function replace(pattern, replacement) {
        value = value.replace(new RegExp(pattern, 'gi'), replacement);
    }

    function digitReplacer(_, x) {
        return MAPPING[x];
    }

    function numberReplacer(_, y) {
        var values = y.split('');
        var head = +values.shift();
        var output = '+[]';

        if (head > 0) {
            output = '+!' + output;
        }
        for (i = 1; i < head; i++) {
            output = '+!+[]' + output;
        }
        if (head > 1) {
            output = output.substr(1);
        }

        return [output]
            .concat(values)
            .join('+')
            .replace(/(\d)/g, digitReplacer);
    }

    for (i = MIN; i <= MAX; i++) {
        character = String.fromCharCode(i);
        value = MAPPING[character];
        if (!value) {
            continue;
        }

        for (key in CONSTRUCTORS) {
            replace('\\b' + key, CONSTRUCTORS[key] + '["constructor"]');
        }

        for (key in SIMPLE) {
            replace(key, SIMPLE[key]);
        }

        replace('(\\d\\d+)', numberReplacer);
        replace('\\((\\d)\\)', digitReplacer);
        replace('\\[(\\d)\\]', digitReplacer);

        replace('GLOBAL', GLOBAL);
        replace('\\+""', '+[]');
        replace('""', '[]+[]');

        MAPPING[character] = value;
    }
}

function replaceStrings() {
    var regEx = /[^\[\]\(\)\!\+]{1}/g,
        all,
        value,
        missing,
        count = MAX - MIN;

    function findMissing() {
        var all,
            value,
            done = false;

        missing = {};

        for (all in MAPPING) {
            value = MAPPING[all];

            if (value && value.match(regEx)) {
                missing[all] = value;
                done = true;
            }
        }

        return done;
    }

    function mappingReplacer(a, b) {
        return b.split('').join('+');
    }

    function valueReplacer(c) {
        return missing[c] ? c : MAPPING[c];
    }

    for (all in MAPPING) {
        if (MAPPING[all]) {
            MAPPING[all] = MAPPING[all].replace(
                /\"([^\"]+)\"/gi,
                mappingReplacer
            );
        }
    }

    while (findMissing()) {
        for (all in missing) {
            value = MAPPING[all];
            value = value.replace(regEx, valueReplacer);

            MAPPING[all] = value;
            missing[all] = value;
        }

        if (count-- === 0) {
            console.error('Could not compile the following chars:', missing);
        }
    }
}

function escapeSequence(c) {
    var cc = c.charCodeAt(0);
    if (cc < 256) {
        return '\\' + cc.toString(8);
    } else {
        var cc16 = cc.toString(16);
        return '\\u' + ('0000' + cc16).substring(cc16.length);
    }
}

function escapeSequenceForReplace(c) {
    return escapeSequence(c).replace('\\', 't');
}

function encode(input, wrapWithEval, runInParentScope) {
    var output = [];

    if (!input) {
        return '';
    }

    var unmappped = '';
    for (var k in MAPPING) {
        if (MAPPING[k]) {
            unmappped += k;
        }
    }
    unmappped = unmappped.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
    unmappped = new RegExp('[^' + unmappped + ']', 'g');
    var unmappedCharactersCount = (input.match(unmappped) || []).length;
    if (unmappedCharactersCount > 1) {
        // Without this optimization one unmapped caracter has encoded length
        // of about 3600 characters. Every additional unmapped character adds
        // 2000 to the total length. For example, the lenght of `~` is 3605,
        // `~~` is 5600, and `~~~` is 7595.
        //
        // The loader with replace has encoded length of about 5300 characters
        // and every additional character adds 100 to the total length.
        // In the same example the length of `~~` becomes 5371 and `~~~` -- 5463.
        //
        // So, when we have more than one unmapped character we want to encode whole input
        // except select characters (that have encoded length less than about 70)
        // into an escape sequence.
        //
        // NOTE: `t` should be escaped!
        input = input.replace(
            /[^0123456789.adefilnrsuN]/g,
            escapeSequenceForReplace
        );
    } else if (unmappedCharactersCount > 0) {
        //Because we will wrap the input into a string we need to escape Backslash
        // and Double quote characters (we do not need to worry about other characters
        // because they are not mapped explicitly).
        // The JSFuck-encoded representation of `\` is 2121 symbols,
        // so esacped `\` is 4243 symbols and escaped `"` is 2261 symbols
        // however the escape sequence of that characters are
        // 2168 and 2155 symbols respectively, so it's more practical to
        // rewrite them as escape sequences.
        input = input.replace(/["\\]/g, escapeSequence);
        //Convert all unmapped characters to escape sequence
        input = input.replace(unmappped, escapeSequence);
    }

    var r = '';
    for (var i in SIMPLE) {
        r += i + '|';
    }
    r += '.';

    input.replace(new RegExp(r, 'g'), function (c) {
        var replacement = SIMPLE[c];
        if (replacement) {
            output.push('(' + replacement + '+[])');
        } else {
            replacement = MAPPING[c];
            if (replacement) {
                output.push(replacement);
            } else {
                throw new Error('Found unmapped character: ' + c);
            }
        }
    });

    output = output.join('+');

    if (/^\d$/.test(input)) {
        output += '+[]';
    }

    if (unmappedCharactersCount > 1) {
        // replace `t` with `\\`
        output =
            '(' +
            output +
            ')[' +
            encode('split') +
            '](' +
            encode('t') +
            ')[' +
            encode('join') +
            '](' +
            encode('\\') +
            ')';
    }

    if (unmappedCharactersCount > 0) {
        output =
            '[][' +
            encode('flat') +
            ']' +
            '[' +
            encode('constructor') +
            ']' +
            '(' +
            encode('return"') +
            '+' +
            output +
            '+' +
            encode('"') +
            ')()';
    }

    if (wrapWithEval) {
        if (runInParentScope) {
            output =
                '[][' +
                encode('flat') +
                ']' +
                '[' +
                encode('constructor') +
                ']' +
                '(' +
                encode('return eval') +
                ')()' +
                '(' +
                output +
                ')';
        } else {
            output =
                '[][' +
                encode('flat') +
                ']' +
                '[' +
                encode('constructor') +
                ']' +
                '(' +
                output +
                ')()';
        }
    }

    return output;
}

fillMissingDigits();
replaceMap();
replaceStrings();

/* ============================================= */

print(encode(readline()));