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Cod sursa(job #601364)
#include <stdio.h>
#define mod 1999999973
int bin[10000], l;
void binar(int p)
{
l = 0;
while(p != 0)
{
bin[l++] = p % 2;
p = p / 2;
}
}
int putere2(int n, int p)
{
int x1 = n, x2 = n * n;
int i;
for(i = 0; i < l-1; i++)
if(bin[i] == 0)
{
x2 = x1 * x2;
x1 = x1 * x1;
}
else
{
x1 = x1 * x2;
x2 = x2 * x2;
}
return x1;
}
int putere(long int x, long int n)
{
if(n == 0)
return 1;
if(n % 2 == 1)
return (x * putere(x, (n-1)/2) * putere(x, (n-1)/2))% mod;
return (putere(x, n/2) * putere(x, n/2))% mod;
}
int putere3(int n, int p)
{
int i;
if(p == 0)
return 0;
if(p == 1)
return n;
int r = n;
for(i = l-2; i >= 0; i--)
{
if(bin[i] == 1)
r = (r * r * n) % mod;
else
r = (r * r) % mod;
//printf("%d. %d r = %d\n", l - i - 1, bin[i], r);
}
return r;
}
int main()
{
freopen("lgput.in", "r", stdin);
freopen("lgput.out", "w", stdout);
int i, n, p;
scanf("%d %d", &n, &p);
binar(p);
printf("%d", putere3(n, p));
binar(p);
return 0;
}