Submission #2095235

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Source Code Expand

#include<iostream>
#include<cmath>
#include<algorithm>
using namespace std;
int cnt[30]={0};
bool flag=false;
bool v[30]={0};
int res=-1;
void find(int x)
{
	if(x==13)
	{
		int a=24;
		for(int i=0;i<24;i++)
			for(int j=i+1;j<24;j++)
				if(v[i]&&v[j])
					a=min(a,min(j-i,24-j+i));
		res=max(a,res);
		return;
	}
	if(cnt[x]==2) 
	{
		v[x]=v[24-x]=1;
		find(x+1);
	}
	else if(cnt[x]==1)
	{
		v[x]=1;
		find(x+1);
		v[x]=0;
		if(x)
		{
			v[24-x]=1;
			find(x+1);
			v[24-x]=0;
		}
	}
	else find(x+1);
}
int main()
{
	int n,m;
	scanf("%d",&n);
	cnt[0]=1;
	for(int i=1;i<=n;i++)
	{
		scanf("%d",&m);
		cnt[m]++;
		if(cnt[m]>2) flag=true;
	}
	if(flag||cnt[0]>1||cnt[12]>1)
	{
		cout<<0;
		return 0;
	}
	else
	{
		find(0);
		cout<<res<<endl;
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:43:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:47:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&m);
                 ^

Judge Result