3281 - 求n的值
输入一个整数m,求恰好使s=1+2+3+…+n的值大于m时n的值。
<span style="font-family:宋体;font-size:12pt;">输入</span><span style="font-size:12pt;"> 10</span>
<span style="font-family:宋体;font-size:12pt;">输出</span><span style="font-size:12pt;"> <span>5</span></span>
<span style="font-size:12pt;"></span>
<span style="font-family:宋体;font-size:12pt;">输入</span><span style="font-size:12pt;">1000</span>
Input
Output
Examples
Input
Output
Solution C++
#include<iostream> using namespace std; int main() { int m,n=1,sum=0; cin>>m; do { sum+=n; n++; } while (sum<=m); cout<<n-1<<endl; return 0; }