OI-codes/LibreOJ/6/data/interactor.cpp

#include <iostream>

#include <testlib.h>

#include <cstdlib>
#include <fstream>
#include <vector>

int main(int argc, char **argv) {
    registerInteraction(argc, argv);

    int n = inf.readInt(), nguess = 0;
    std::vector<int> nums(n);
    for (int i = 0; i < n; i++) {
        nums[i] = inf.readInt();
    }

    while (true) {
        std::string cmd = ouf.readWord();
        if (cmd == "get_num") {
            std::cout << n << std::endl
                      << std::flush;
        } else if (cmd == "guess") {
            nguess++;
            int index = ouf.readInt(), val = ouf.readInt();
            quitif(!(0 <= index && index < n), _pe, "`index` must in [0, n)!");

            if (val < nums[index]) {
                std::cout << -1 << std::endl
                          << std::flush;
            } else if (val > nums[index]) {
                std::cout << 1 << std::endl
                          << std::flush;
            } else {
                std::cout << 0 << std::endl
                          << std::flush;
            }
        } else if (cmd == "submit") {
            bool wrongAnswer = false;
            for (int i = 0; i < n; i++) {
                int x = ouf.readInt();

                if (x != nums[i] && !wrongAnswer) {
                    wrongAnswer = true;
                    quitf(_wa, "First differ on the %d-th number!", i);
                }
            }

            if (!wrongAnswer) {
                quitp(
                    std::max(std::min(100.0, (950.0 - ((double)nguess / n - 100.0)) / 950.0 * 100.0), 0.0),
                    "nguess = " + std::to_string(nguess));
            }
        } else {
            quitf(_pe, "Invalid command `%s`!", cmd.c_str());
        }
    }
}