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- #include <stdio.h>
- int nwd(int a, int b){
- if(b == 0) return a;
- return nwd(b, a % b);
- }
- int main(){
- unsigned t;
- int a, b;
- scanf("%d", &t);
- int i =0;
- for(i = 0; i < t; ++i){
- scanf("%d %d", &a, &b);
- printf(nwd(a,b));
- }
- return 0;
- }
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