Cod sursa(job #2348110)

Utilizator BlaugranasEnal Gemaledin Blaugranas Data 19 februarie 2019 13:15:56
Problema Ridicare la putere in timp logaritmic Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.58 kb
#include<cstdio>
long long y=1,x,N=1999999973,p;
int o,l;
char r[100];
long long A()
{
  	long long s=0;
  	for(;r[o]<'0'||r[o]>'9';o++);
  	for(;r[o]>='0'&&r[o]<='9';o++)
  		s=s*10+r[o]-'0';
  	return s;
}
void S(long long b)
{
    char e[100];
    int j;
    for(j=0;b;b/=10,j++)
        e[j]=b%10+48;
    for(j--;j>=0;j--)
        r[l++]=e[j];
}
int main()
{
    freopen("lgput.in","r",stdin),freopen("lgput.out","w",stdout),fread(r,1,100,stdin),x=A(),p=A();
    for(;p;p>>=1,x=(x*x)%N)
        if(p&1)
            y=(x*y)%N;
    S(y),fwrite(r,1,l,stdout);
}