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Cod sursa(job #614510)
#include <stdio.h>
#define m 1999999973
long long x;
long long pow(long long y){
if(y==1)return x; else
if(y%2==0){
long long z;
z=pow(y/2);
return (z*z)%m; } else {
long long z;
z=pow(y/2);
return (z*z)%m*z%m; };
}
int main(){
long long y;
freopen("lgput.in","r",stdin);
freopen("lgput.out","w",stdout);
scanf("%lld%lld",&x,&y);
printf("%lld\n",pow(y));
}