Submission #1940652

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<vector>
#include<string>
#include<cstring>
#include<functional>
#include<stack>
#include<queue>
#include <iomanip>
#include<map>
#include<limits>
#include<cmath>
#include<algorithm>
#include<bitset>
#include<utility>
#include<complex>
#include<cstdlib>
#include<set>
#include<cctype>

#define DBG cerr << '!' << endl;
#define REP(i,n) for(int (i) = (0);(i) < (n);++i)
#define rep(i,s,g) for(int (i) = (s);(i) < (g);++i)
#define rrep(i,s,g) for(int (i) = (s);i >= (g);--(i))
#define PB push_back
#define MP make_pair
#define FI first
#define SE second
#define SHOW1d(v,n) {for(int i = 0;i < (n);i++)cerr << v[i] << ' ';cerr << endl << endl;}
#define SHOW2d(v,i,j) {for(int aaa = 0;aaa < i;aaa++){for(int bbb = 0;bbb < j;bbb++)cerr << v[aaa][bbb] << ' ';cerr << endl;}cerr << endl;}
#define ALL(v) v.begin(),v.end()
#define Decimal fixed<<setprecision(20)

using namespace std;

typedef long long ll;
typedef vector<int> iv;
typedef vector<iv> iiv;
typedef vector<string> sv;

int main()
{
	int k,t;cin >> k >> t;
	int sum = 0;
	int ma = 0;
	
	REP(i,t)
	{
		int tmp;cin >> tmp;sum += tmp;ma = max(ma,tmp);
	}
	
	ll tmp = sum - ma;
	if(sum%2!=0)tmp++;
//	cout << ma << ' ' << tmp << endl;
	cout << (ma+tmp-1)/tmp - 1 << endl;
	return 0;

}

Submission Info

Judge Result