1084B - Kvass and the Fair Nut - CodeForces Solution


greedy implementation *1200

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Python Code:

n,s=map(int,input().split())
v=list(map(int,input().strip().split()))
c=sum(v)
if c<s:print(-1)
else:print(min((c-s)//n,min(v)))

C++ Code:

//Deeva
#include <bits/stdc++.h>
#include <iostream>
#include <vector>
#include <cmath>
#include <string>
#include <iomanip>
#include <algorithm>
using namespace std;
#define ll long long int
ll bot=1;

int main()
{
    ll n,s,mini=INT_MAX,a=0,b=0;
    cin>>n>>s;
    vector<ll> v(n,0);
    for(ll i=0;i<n;i++)
    {
        cin>>v[i];
        mini=min(mini,v[i]);
        a=a+v[i];
    }
    if(a<s)
    {
        cout<<"-1";
        return 0;
    }
    for(ll i=0;i<n;i++)
    {
        b=b+v[i]-mini;
    }
    b=s-b;
    if(b<0)
    {
        cout<<mini;
        return 0;
    }
    a=b%n;
    b=b/n;
    if(a!=0)
    {
        b++;
    }
    cout<<mini-b;

}


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