Submission #4900

#	Time	Username	Problem	Language	Result	Execution time	Memory
4900		gs13068	medians (balkan11_medians)	C++98	100 / 100	36 ms	1408 KiB

medians

#include<cstdio>

bool exist[300000];

int main()
{
	int l,r,bef;
	int i,t,n;
	scanf("%d",&n);
	l=1;r=2*n-1;
	scanf("%d",&t);
	printf("%d",t);
	exist[t]=true;
	bef=t;
	for(i=1;i<n;i++)
	{
		scanf("%d",&t);
		if(!exist[t])
		{
			exist[t]=true;
			printf(" %d",t);
			if(t<bef)
			{
				while(exist[l])l++;
				exist[l]=true;
				printf(" %d",l);
			}
			else
			{
				while(exist[r])r--;
				exist[r]=true;
				printf(" %d",r);
			}
		}
		else if(t==bef)
		{
			while(exist[l])l++;
			exist[l]=true;
			printf(" %d",l);
			while(exist[r])r--;
			exist[r]=true;
			printf(" %d",r);
		}
		else if(t<bef)
		{
			while(exist[l])l++;
			exist[l]=true;
			printf(" %d",l);
			while(exist[l])l++;
			exist[l]=true;
			printf(" %d",l);
		}
		else
		{
			while(exist[r])r--;
			exist[r]=true;
			printf(" %d",r);
			while(exist[r])r--;
			exist[r]=true;
			printf(" %d",r);
		}
		bef=t;
	}
}

Compilation message (stderr)

medians.cpp: In function 'int main()':
medians.cpp:9:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
medians.cpp:11:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&t);
                ^
medians.cpp:17:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&t);
                 ^

• Subtask 1: 65 / 65
• Subtask 2: 35 / 35