Cod sursa(job #188606)
| Utilizator | Data | 9 mai 2008 11:16:19 | |
|---|---|---|---|
| Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.4 kb |
#include <stdio.h>
long long a, b, c, i, sol = 1;
int main()
{
freopen ("lgput.in", "rt", stdin);
freopen ("lgput.out", "wt", stdout);
scanf("%lld %lld", &a, &b);
c = 1999999973;
a %= c;
for (i = 0; (1<<i) <= b; ++ i)
{
//if (i > 31) break;
if ( ((1<<i) & b) )
sol = ((sol % c) * (a % c)) % c;
a = ((a % c) * (a % c)) % c;
}
printf("%lld\n", sol);
return 0;
}
