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OI-codes/Luogu/P2069/P2069.cpp

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#include <bits/stdc++.h>
using namespace std;
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int n, m, k = 1, t;
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vector<int> listnode;
int main() {
cin >> n >> m;
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for (int i = 1; i <= n; i++) {
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listnode.push_back(i);
}
for (int i = 1; i <= m; i++) {
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t = i * i * i % 5 + 1;
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k += t;
if (k > listnode.size()) {
k = t + 1;
}
if (i != m) {
listnode.erase(listnode.begin() + k - 1);
}
}
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cout << listnode[k - 1] << endl;
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return 0;
}