Submission #12793

#	Time	Username	Problem	Language	Result	Execution time	Memory
12793		woqja125	전선 연결하기 (GA9_wire)	C++98	0 / 100	1000 ms	5776 KiB

wire

#include<stdio.h>
int d[600001];
int l[300001];
int ans[300001];
int main()
{
	int n, i;
	int a, b, t;
	a = b = 10000000;
	scanf("%d", &n);
	for(i=1; i<=2*n; i++)
	{
		scanf("%d", d+i);
		l[d[i]] = i;
	}
	for(i=1; i<=2*n; i++)
	{
		if(l[d[i]] == i) continue;
		if(a <= i) a = 10000000;
		if(b <= i) b = 10000000;
		t = l[d[i]];
		if(t > a && t > b)
		{
			printf("IMPOSSIBLE");
			return 0;
		}
		if(t <= a && (a <= b || b > t) )
		{
			a = t;
			ans[d[i]] = 0;
		}
		else if(t<=b && (b<a || a>t))
		{
			b = t;
			ans[d[i]] = 1;
		}
		else while(1);
	}
	for(i=1; i<=2*n; i++) printf("%c", ans[d[i]]==1?'v':'^');
	return 0;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 15
• Subtask 3: 0 / 37
• Subtask 4: 0 / 39