Submission #11544

#	Time	Username	Problem	Language	Result	Execution time	Memory
11544		cki86201	전선 연결하기 (GA9_wire)	C++98	0 / 100	48 ms	6068 KiB

wire

#include<stdio.h>

int a[2][300030];
int t[2];
int n, p[300030], l[300030];
char ans[300030];

int main()
{
	scanf("%d",&n);
	int i;
	for(i=1;i<=n+n;i++){
		int x;
		scanf("%d",&x);
		if(p[x] == 0)p[x] = i;
		else l[i] = p[x], l[p[x]] = i;
	}
	for(i=1;i<=n+n;i++){
		if(t[0] != 0 && a[0][t[0]-1] == i)--t[0];
		if(t[1] != 0 && a[1][t[1]-1] == i)--t[1];
		if(l[i] < i)continue;
		if(t[0] == 0 || l[i] < a[0][t[0]-1])a[0][t[0]++] = l[i], ans[i] = ans[l[i]] = '^';
		else if(t[1] == 0 || l[i] < a[1][t[1]-1])a[1][t[1]++] = l[i], ans[i] = ans[l[i]] = 'v';
		else{printf("INVALID");return 0;}
	}
	puts(ans+1);
	return 0;
}

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