C++ 中的时间测试与空间申请

#include<iostream>
#include<ctime>

using namespace std;

int main()
{
	clock_t start,finish;
	start=clock();
    //个人代码
	finish=clock();
	cout<<(double)(finish-start)/CLOCKS_PER_SEC<<"(s)"<<endl;
}

#include<iostream>
using namespace std;
const int MAX_N = 300000000;

int a[MAX_N],b[MAX_N];
int main()
{
	int n;
	cin >> n;
	cout << n << endl;
}