Submission #1870457

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

#define FOR(i,a,b) for(int i = (a); i < (b); i++)
#define RFOR(i,b,a) for(int i = (b) - 1; i >= (a); i--)
#define ITER(it, a) for(typeof(a.begin()) it = a.begin(); it != a.end(); it++)
#define FILL(a, value) memset(a, value, sizeof(a))

#define SZ(a) (int) a.size()
#define ALL(a) a.begin(),a.end()
#define PB push_back
#define MP make_pair

typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PII;

const double PI = acos(-1.0);
const LL INF = 1000 * 1000 * 1000 + 7;
const LL LINF = INF * (LL)INF;

const int MAX = 100100;

int A[MAX];

LL S[MAX];
LL DP[MAX];

int main()
{
	//freopen("in.txt", "r", stdin);
	//ios::sync_with_stdio(false); cin.tie(0);

	int n;
	scanf("%d", &n);

	FOR (i, 0, n)
	{
		scanf("%d", &A[i]);
	}

	sort(A, A+n);

	FOR (i, 0, n)
	{
		S[i] = A[i];
		if (i) S[i] += S[i-1];
	}

	int res = 0;

	DP[n] = 0;
	RFOR(i, n, 0)
	{
		LL cur = S[i];

		if (cur >= DP[i+1]) res++;

		LL val = A[i];
		DP[i] = max(DP[i+1] - val, (val + 1) / 2);
	}

	cout<<res<<endl;


}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:35:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
./Main.cpp:39:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &A[i]);
                     ^

Judge Result