C++废物啊啊!友友们给偶看看吧看看吧

Question

求解答!老是错误过不了 1.X_X宝子们帮忙看看哪错了吧!
学习的c++哦

Answer 1

#include <iostream>
using namespace std;

int main() {
int m;
cin >> m;
int n = 1;
int sum = 1;
while (sum <= m) {
    n++;
    sum += n;
}

cout << n-1 << endl;

return 0;
}