Cod sursa(job #2504424)

Utilizator rares404AlShaytan - Balasescu Rares rares404 Data 4 decembrie 2019 21:52:21
Problema Invers modular Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.54 kb
#include <bits/stdc++.h>

const int MOD = 1e9 + 7 ;

FILE *in = fopen("inversmodular.in", "r"), *out = fopen("inversmodular.out", "w") ;

int lgput(int a, int b) {
        int ret(1) ;
        for ( ; b ; b >>= 1) {
                if (b & 1) {
                        ret = ret * a % MOD ;
                }
                a = a * a % MOD ;
        }
        return ret ;
}

int main() {
        int a, b ;
        fscanf(in, "%d %d", &a, &b) ;
        int ans = lgput(a, b - 2) ;
        fprintf(out, "%d\n", ans % b) ;
}