扑克牌一题只过了60%大佬求教/(ㄒoㄒ)/~~

#include<bits/stdc++.h>
using namespace std;
int c[55];
int n,m;
bool check(int x)
{
    int count=0;
    for(int i=1;i<=n;i++)
    {
       if(c[i]-x<0)
       {
           count+=x-c[i];
       }
    }
    if(count<=x) return 1;
    else return 0;
}
int main()
{
   
    cin>>n>>m;
    for(int i=1;i<=n;i++)
    {
        cin>>c[i];
    }
    int l=0,r=m;
    while(l<r)
    {
        int mid=(l+r+1)/2;
        if(check(mid)) //joker<= tao shu 1
        {
            l=mid;
        }else
            r=mid-1;
    }
    cout<<l;
}