Cod sursa(job #2027363)
Utilizator | Data | 25 septembrie 2017 22:35:48 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.45 kb |
#include <stdio.h>
using namespace std;
int main()
{
FILE *in, *out;
in = fopen("lgput.in", "r");
out = fopen("lgput.out", "w");
long long x, n, y=1;
const long long N=1999999973;
fscanf(in, "%lld%lld", &x, &n);
while(n>1){
if(n%2==0){
x*=x;
n/=2;
}
else{
y*=x;
x*=x;
n=(n-1)/2;
}
}
x*=y;
fprintf(out, "%lld", x%N);
return 0;
}