#include<bits/stdc++.h>
#define int long long
using namespace std;
int n, m, k;
int ans = 0;
signed main()
{
cin >> n >> m;
for(int i = 1; i <= m; i++)
{
cin >> k;
ans += k;
}
int diff = ans - n * (m - 1);
cout << max((long long)0, diff) << endl;
return 0;
}
1-5 程序员买包子
cpp复制代码
#include<iostream>
using namespace std;
int main(){
int n, m, k;
string x;
cin >> n >> x >> m >> k;
if(k == n) cout << "mei you mai " << x << " de";
else if(k == m) cout << "kan dao le mai " << x << " de";
else cout << "wang le zhao mai " << x << " de";
return 0;
}