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19
TangDou/AcWing/Divisor/872.cpp
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19
TangDou/AcWing/Divisor/872.cpp
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#include <bits/stdc++.h>
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using namespace std;
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// 最大公约数,辗转相除法
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int gcd(int a, int b) {
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return b ? gcd(b, a % b) : a;
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}
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int main() {
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int n;
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cin >> n;
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while (n--) {
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int a, b;
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cin >> a >> b;
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printf("%d\n", gcd(a, b));
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}
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return 0;
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}
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