March cook off GUESSIT

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1

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define vi vector
#define mod 1e9+7
#define ff first
#define ss second
#define ins insert
#define endl “\n”
#define pie_op ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define tc int t;cin>>t;while(t–)
#define pb push_back
#define input(n) int arr[n];for(int i1=0;i1<n;i1++)cin>>arr[i1]

int main()
{
//pie_op;
int t;cin>>t;
while(t–)
{
for(int i=1;i<=1000;i++)
{
cout<<i*i<<endl;
int n;cin>>n;
if(n==1||n==-1)
break;
}
}
return 0;
}

using ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
is giving wrong answer can anyone explain me this.
when i uncomment pie_op it works fine.

2

cout<<i*i<<endl<<flush;

1 Like
3

fastio is just like using scanf/printf in C. They don’t flush the buffer. So that is the reason why you are getting WA. Just comment that stmt and it will work fine.

1 Like
4

thx bro …it helped…