OJ Board

What is wrong with my code?


#include <cstdio>
#include <iostream>
#include <cstring>
using namespace std;

bool prima[1000005];

int main()
{
memset(prima,true,sizeof(prima));
prima[0] = false;
prima[1] = false;
for (long i = 2; i < 1000000; i++)
if (prima[i])
{
long j = 2*i;
while (j ...

what is wrong with my code?


#include <cstdio>

int main()
{
long n;
scanf("%ld",&n);
for (long i = 0; i < n; i++)
{
if (i != 0) printf("\n");
long a, f;
scanf("%ld%ld",&a,&f);
for (long j = 0; j < f; j++)
{
if (j != 0) printf("\n");
for (long k = 1; k <= a; k++)
{
for (long l = 0; l ...

I got WA before, but after i put that qwertyu[' '] = ' ', i got AC... so my mistake is just forget that space is space