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>