Cod sursa(job #371831)
Utilizator | avram florin constantin avram_florin | Data | 7 decembrie 2009 09:34:51 |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.5 kb |
//ridicare la putere in timp logaritmic
//infoarena -> arhiva educationala lgput
#include<cstdio>
using namespace std;
unsigned long long x,y;
int n,m,p,r;
int main ()
{
freopen("lgput.in" , "r" , stdin);
freopen("lgput.out" , "w" , stdout);
scanf("%d%d" , &n , &p);
m=1999999973;
r=1;
while(p)
{
if(p%2)
{
x=r*n;
r=x%m;
y=n*n;
n=y%m;
p=p/2;
}
else
{
y=n*n;
n=y%m;
p=p/2;
}
}
printf("%d\n" , r);
return 0;
}