Cod sursa(job #1345007)
Utilizator | Data | 17 februarie 2015 10:20:41 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.39 kb |
#include <stdio.h>
#define p 1999999973
unsigned long pow(unsigned long a, unsigned long b){
if(b==1) return a%p;
if(b%2==0) return pow(a%p,b/2)%p*pow(a%p,b/2)%p;
return pow(a,b-1)%p*a%p;
}
int main(){
unsigned long a,b;
FILE*f=fopen("lgput.in","r");
fscanf(f,"%ld %ld",&a,&b);
fclose(f);
FILE*g=fopen("lgput.out","w");
fprintf(g,"%ld",pow(a%p,b)%p);
fclose(g);
return 0;
}