AC with Macro, TLE without macro

Problem Link: CodeChef: Practical coding for everyone

I have defined a macro file_i_o as “ ios_base:sync_with_stdio(0);cin.tie(0);cout.tie(0); “



int tc;
while(tc-- > 0){
    int N,M;
    cin >> N >> M;
    int a[N+1];
    a[0] = -1;
    for(int i = 1; i <= N; ++i)

    int left[N+1], right[N+1];
    int prev = INT_MAX;
    left[0] = right[0] = INT_MAX;
    for(int i=1;i<=N;++i){
        left[i] = prev;
        if(a[i] == 1){
            prev = i;
    prev = INT_MAX;
    for(int i=N;i>0;--i){
        right[i] = prev;
        if(a[i] == 2){
            prev = i;
    int s = M;
        ll q;
        if(a[q] || q==1){
            cout << 0 << spc;
        }else if(left[q] == INT_MAX and right[q] == INT_MAX){
            cout << -1 << spc;
            cout << min(abs(q-left[q]),abs(right[q]-q) ) << spc;


If i don’t include those lines defined by macro in my code, then i am getting a TLE.
And if i include those three lines then it is getting submitted in 0.16 seconds(AC).
Why is this difference so big?

That’s the link to the whole Contest, not the Problem :slight_smile:

Can you just link to the AC and the TLE solutions, please?

Ohh sorry…my bad

TLE Link: CodeChef: Practical coding for everyone

AC Link: CodeChef: Practical coding for everyone

The only difference between those 2 submissions is that in the TLE submission the very first line in main function, i.e. the macro file_i_o is commented out

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