austin2010 2023-01-14 19:33:18 6 返回题目
#include <bits/stdc++.h> using namespace std; int main() { int m, n, ans = 0; cin >> m >> n; if (m % 2 == 1) { for (int i = m; i <= n; i += 2) { ans += i; } } else { m++; for (int i = m; i <= n; i += 2) { ans += i; } } cout << ans; return 0; }
