How to reduce the execution time of program in c++.

 We can simply use two sentence in the body of main can reduce the execution time in cpp;

ios_base::sync_with_stdio(false);

    cin.tie(NULL);

When we use this it reduces execution time of the program .

Generally we use this in competitive programming

Example:-

#include <bits/stdc++.h>

using namespace std;

int main()

{

    ios_base::sync_with_stdio(false);

    cin.tie(NULL);

    return 0;

}

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Cracking the coding interview:-

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Data structure:-

•   Program to find cycle in the graph
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