题目链接：http://codeforces.com/contest/448/problem/D
思路：用二分法
code：
#include<cstdio>#include<cmath>#include<iostream>using namespace std;__int64 n,m,k;__int64 f(__int64 x){ __int64 res=0; for(__int64 i=1;i <br> <br> <p></p> </iostream></cmath></cstdio>
![[웹 프런트엔드] Node.js 빠른 시작](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
