Submission #2077266

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Source Code Expand

#include<stdio.h>
#include<vector>
#include<algorithm>
#include<math.h>
#include<stdlib.h>
#include<string>
#include<iostream>
#include<set>
#include<map>
#include<deque>
using namespace std;
typedef long long ll;
typedef pair<ll, ll>pii;
typedef pair<pii, ll>pi3;
ll mod = 1000000007;
int d[1000];
int main()
{
	int n, k;
	scanf("%d%d", &n, &k);
	int maxi = 0;
	for (int i = 0; i < k; i++)
	{
		int z;
		scanf("%d", &z);
		maxi = max(maxi, z);
	}
	if (maxi * 2 - 1 <= n)printf("0\n");
	else printf("%d\n", maxi + maxi - n - 1);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:20:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &k);
                       ^
./Main.cpp:25:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &z);
                  ^

Judge Result