#include<iostream>
#include<cstdlib>
#include<cstdio>
using namespace std;
int main()
{
int a,b,c;
cin>>a>&g[......]
#include<iostream>
#include<cstdlib>
#include<cstdio>
using namespace std;
int main()
{
int a,b,c;
cin>>a>&g[......]