Cod sursa(job #2532657)
Utilizator | Data | 28 ianuarie 2020 08:34:42 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.42 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("lgput.in");
ofstream g("lgput.out");
const int x= 1999999973;
int a, n, v[10009], i, k;
unsigned long long m;
int main()
{
f>>a>>n;
while(n!=0)
{
v[++k]=n%2;
n=n/2;
}
m=1;
for(i=k; i>=1; i--)
if(v[i]==1)
m=((m*m)%x)*a%x;
else m=(m*m)%x;
g<<m;
return 0;
}