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plz help- it's time limit exceeded,but I can't think of anything else yet

#include<stdio.h>
#include<iostream>
using namespace std;
int main()
{
freopen("D://test.txt","r",stdin);
freopen("D://out.txt","w",stdout);

long long i,j,p[5010],t,n,sum,k;

while(scanf("%lld",&n)!=EOF)
{
for(i=0;i ...

plz help- it's time limit exceeded,but I can't think of anything else yet :evil:

#include<stdio.h>
#include<iostream>
using namespace std;
int main()
{
freopen("D://test.txt","r",stdin);
freopen("D://out.txt","w",stdout);

long long i,j,p[6000],t,n,sum,k;

while(scanf("%lld",&n)!=EOF)
{
for ...

can anyone please help me with this???? it says WA. :(

=========================================================

#include<stdio.h>
#include<iostream>
#include<algorithm>
using namespace std;
long int a[20005];
int main()
{
freopen("D://test.txt","r",stdin);
freopen("D://out.txt","w",stdout ...