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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. typedef long long iint;
  4.  
  5. int main() {
  6.     iint n;
  7.     cin >> n;
  8.     iint sum = (n * (n-1)) / 2;
  9.     while (n > 1) {
  10.         iint a;
  11.         cin >> a;
  12.         cout << a << endl;
  13.         sum -= a;
  14.         cout << "SUM " << sum << endl;
  15.         n--;
  16.     }
  17.     cout << sum;
  18. }
Success #stdin #stdout 0.01s 5328KB
comments (?)
stdin 
5
2 3 1 5
stdout 
2
SUM 8
3
SUM 5
1
SUM 4
5
SUM -1
-1
https://ideone.com/ALUiHt
language:
C++14 (gcc 8.3)
created:
4 hours ago
visibility:
public

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