Cod sursa(job #1276509)
Utilizator | Alexandru Petrescu alexpetrescu | Data | 26 noiembrie 2014 15:17:16 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
Compilator | c | Status | done |
Runda | Arhiva educationala | Marime | 0.53 kb |
#include <stdio.h>
#define MOD 1999999973
inline long long lgput(long long a, int n){
long long rez=1;
a%=MOD;
while(n!=0){
if((n&1)==1){
rez=(rez*a)%MOD;
}
a=(a*a)%MOD;
n>>=1;
}
return rez;
}
int main(){
long long a;
int b;
FILE *fin, *fout;
fin=fopen("lgput.in", "r");
fout=fopen("lgput.out", "w");
fscanf(fin, "%lld%d", &a, &b);
fprintf(fout, "%lld\n", lgput(a, b));
fclose(fin);
fclose(fout);
return 0;
}