‘\n’ 太强了

#include<bits/stdc++.h>
#define int long long
using namespace std;
signed main(){
	int N = 5000000;
	freopen("1.txt","w",stdout);
	for (int i = 1 ; i <= N ; ++i){
		//cout<< i << endl;//11.32s
		cout << i << '\n'; //0.7876s
	}		
	return 0;
}