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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.   // Input
  6.   int a, b; cin >> a >> b;
  7.  
  8.   // Process -> Output
  9.   if (a > b) swap(a, b);
  10.   long long sum = 0;
  11.   for (int i = a; i <= b; ++i)
  12.     sum += i;
  13.   cout << sum;
  14.  
  15.   return 0;
  16. }
  17.  
Success #stdin #stdout 0.01s 5296KB
comments (?)
stdin 
3 10
stdout 
52
https://ideone.com/EDkz8q
language:
C++14 (gcc 8.3)
created:
6 days ago
visibility:
public

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