Submission #1749516

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int a[100005],b[100005];
int main(){
	int n;scanf("%d",&n);
	for(int i=1;i<=n;++i)scanf("%d",a+i);
	sort(a+1,a+n+1);
	int res=0;
	for(int i=1,j=0,k=0,l=0;i<=n;++i){
		// cout<<i<<' '<<j<<' '<<k<<' '<<l<<endl;
		if(a[i]==a[i-1])++l;
		else{
			if(a[i]==a[i-1]+1)j=k,k=l;
			else if(a[i]==a[i-1]+2)j=l,k=0;
			else j=k=0;
			l=1;
		}
		res=max(res,l+j+k);
	}
	cout<<res;
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:5:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  int n;scanf("%d",&n);
                      ^
./Main.cpp:6:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for(int i=1;i<=n;++i)scanf("%d",a+i);
                                      ^

Judge Result