Cod sursa(job #1609805)
Utilizator | Data | 23 februarie 2016 00:39:40 | |
---|---|---|---|
Problema | Ridicare la putere in timp logaritmic | Scor | 10 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.37 kb |
#include <stdio.h>
int lgput(int n,int p){
if(p == 0){
return 1;
}
else if(p == 1){
return n;
}
else if(p%2 == 0){
return lgput(n*n,p/2);
}
else if(p%2 == 1){
return n*lgput(n*n,(p-1)/2)*n;
}
}
int main(){
FILE* in = fopen("lgput.in","r");
FILE* out = fopen("lgput.out","w");
int n,p;
fscanf(in,"%d %d",&n,&p);
fprintf(out,"%d",lgput(n,p));
return 0;
}