1 #include<bits/stdc++.h>
2 using namespace std;
3 int main(){
4 int i,k,n = 1e9;
5 clock_t start,end;
6 start = clock();
7 for(i=0;i<n;i++)k++;
8 end=clock();
9 cout<<(double)(end -start)/CLOCKS_PER_SEC<<endl;
10 return 0;
11 }
