#include<stdio.h>
#include<algorithm>
using namespace std;
int n,x,y,t=1,p;
struct data
{
int maxi,mini,ch;
}tree[600010];
void update(int x,int y,int k,int s,int e)
{
if(tree[k].ch)
{
tree[k].maxi+=tree[k].ch; tree[k].mini=tree[k].ch;
tree[k*2].ch+=tree[k].ch; tree[k*2+1].ch+=tree[k].ch; tree[k].ch=0;
}
if(s<=x && y<=e)
{
tree[k].maxi+=p; tree[k].mini+=p; tree[k*2].ch+=p; tree[k*2+1].ch+=p;
return;
}
if(s>y || e<x) return;
update(x,(x+y)/2,k*2,s,e);
update((x+y)/2+1,y,k*2+1,s,e);
tree[k].maxi=max(tree[k*2].maxi,tree[k*2+1].maxi);
tree[k].mini=min(tree[k*2].mini,tree[k*2+1].mini);
}
int main()
{
int i;
scanf("%d",&n);
for(;;){if(t>=n) break; t*=2;}
for(i=1;i<=n;i++)
{
scanf("%d %d",&x,&y);
if(y==1) p=1; else p=-1;
update(1,t,1,1,x);
if(tree[1].maxi<=0) printf("<\n");
else if(tree[1].mini>=0) printf(">\n");
else printf("?\n");
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
0 ms |
8112 KB |
Output isn't correct - 22nd words differ - expected: '?', found: '>' |
2 |
Incorrect |
0 ms |
8112 KB |
Output isn't correct - 17th words differ - expected: '?', found: '>' |
3 |
Incorrect |
0 ms |
8112 KB |
Output isn't correct - 12th words differ - expected: '?', found: '>' |
4 |
Correct |
0 ms |
8112 KB |
Output is correct - 21 tokens |
5 |
Incorrect |
0 ms |
8112 KB |
Output isn't correct - 16th words differ - expected: '?', found: '>' |
6 |
Correct |
0 ms |
8112 KB |
Output is correct - 492 tokens |
7 |
Incorrect |
0 ms |
8112 KB |
Output isn't correct - 263rd words differ - expected: '?', found: '>' |
8 |
Incorrect |
1 ms |
8112 KB |
Output isn't correct - 27th words differ - expected: '>', found: '?' |
9 |
Incorrect |
0 ms |
8112 KB |
Output isn't correct - 10th words differ - expected: '?', found: '>' |
10 |
Correct |
4 ms |
8112 KB |
Output is correct - 8921 tokens |
11 |
Incorrect |
39 ms |
8112 KB |
Output isn't correct - 23rd words differ - expected: '>', found: '?' |
12 |
Incorrect |
68 ms |
8112 KB |
Output isn't correct - 1348th words differ - expected: '?', found: '>' |
13 |
Correct |
56 ms |
8112 KB |
Output is correct - 100000 tokens |
14 |
Correct |
56 ms |
8112 KB |
Output is correct - 100000 tokens |
15 |
Incorrect |
61 ms |
8112 KB |
Output isn't correct - 25th words differ - expected: '?', found: '>' |
16 |
Incorrect |
62 ms |
8112 KB |
Output isn't correct - 10th words differ - expected: '>', found: '?' |
17 |
Correct |
52 ms |
8112 KB |
Output is correct - 100000 tokens |
18 |
Correct |
65 ms |
8112 KB |
Output is correct - 99999 tokens |
19 |
Correct |
69 ms |
8112 KB |
Output is correct - 99999 tokens |
20 |
Correct |
63 ms |
8112 KB |
Output is correct - 99999 tokens |
21 |
Incorrect |
39 ms |
8112 KB |
Output isn't correct - 7th words differ - expected: '>', found: '?' |
22 |
Incorrect |
60 ms |
8112 KB |
Output isn't correct - 9th words differ - expected: '>', found: '?' |
23 |
Incorrect |
56 ms |
8112 KB |
Output isn't correct - 31st words differ - expected: '>', found: '?' |
24 |
Incorrect |
55 ms |
8112 KB |
Output isn't correct - 24th words differ - expected: '?', found: '>' |
25 |
Incorrect |
54 ms |
8112 KB |
Output isn't correct - 63rd words differ - expected: '>', found: '?' |