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P1055 [NOIP2008 普及组] ISBN 号码
R63275520
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Luogu/P1055/P1055.cpp
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24
Luogu/P1055/P1055.cpp
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#include <bits/stdc++.h>
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using namespace std;
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const char mod[] = "0123456789X";
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int t;
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string s;
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int main() {
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cin >> s;
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for (int i = 0, j = 0; i < 12; i++) {
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if (s[i] != '-') {
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t += (s[i] - '0') * ++j;
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}
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}
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if (s[12] != mod[t % 11]) {
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s[12] = mod[t % 11];
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cout << s << endl;
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} else {
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cout << "Right" << endl;
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}
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return 0;
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}
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