十分简单

#include<bits/stdc++.h>
using namespace std;
int main(){long long a,b;cin >> a >> b;cout << a - b << endl;return 0; }

#include<iostream>
using namespace std;
int main()
{
	int a,b;
	cin >> a >> b;
	cout << a - b << endl;
	return 0; 
}