【模板】最大公约数GCD

#include <cstdio>using namespace std;int a,b;int gcd(int a,int b){    int t;    while (b!=0)    {        t=b;        b=a % b;        a=t;    }    return a;}int main(){    scanf("%d%d",&a,&b);    printf("%d",gcd(a,b));    return 0;}

Pixiv ID：59010416