Cod sursa(job #2592430)

Utilizator darkeagleDaniel Popescu darkeagle Data 1 aprilie 2020 18:08:26
Problema Sum Scor 85
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.48 kb
#include<stdio.h>
	
 
	
#define nmax 100000
	
 
	
int i, j, x, n, pt[nmax+1];
	
long long rsp;
	
int main()
	
{
	
	freopen("sum.in", "rt", stdin);
	
	freopen("sum.out", "wt", stdout);
	
	
	
	for (i = 1; i <= nmax; i ++)
	
		pt[i] = i-1;
	
	for (i = 1; i <= nmax; i ++)
	
		for (j = 2*i; j <= nmax; j += i)
	
			pt[j] -= pt[i];
	
	
	
	scanf("%d", &n);
	
	for (i = 1; i <= n; i ++){
	
		scanf("%d", &x);
	
		
	
		rsp = (long long)2*pt[x]*x;
	
		printf("%lld\n", rsp);
	
	}
	
	
	
	return 0;
	
}