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#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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using ll=long long;
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struct mat {
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ll x[2][2];
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};
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mat operator*(const mat &lhs, const mat &rhs) {
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}
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int main() {
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return 0;
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}
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