Cod sursa(job #1637473)
Utilizator | Data | 7 martie 2016 17:33:55 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.47 kb |
#include <cstdio>
#define MOD 1999999973
using namespace std;
long long a,b,p;
int main()
{
freopen("lgput.in","r",stdin);
freopen("lgput.out","w",stdout);
scanf("%lld%lld",&a,&b);
p=1;
while( b > 0)
{
if (b%2 == 1)
{
p = p * a;
p %= MOD;
b=b-1;
}
else
{
a = a * a;
a %= MOD;
b = b/2;
}
}
printf("%lld\n",p);
return 0;
}