#include <bits/stdc++.h>
#define pb push_back
#define ss second
#define ff first
#define N 100005
#define inf 1000000009
#define ll long long
#define mid(a,b) (a+b)/2
using namespace std;
int n,T[N][3],T1[N][3],mx,mt,t,r;
void upd(int v,int pos,int l,int r,int nd){
T[nd][1] += T[nd / 2][2];
T1[nd][1] += T1[nd / 2][2];
T[nd][2] += T[nd / 2][2];
T1[nd][2] += T1[nd / 2][2];
if(r <= pos){
T[nd][1] += v;
T[nd][2] += v;
T1[nd][1] += v;
T1[nd][2] += v;
return;
}
if(l <= pos){
upd(v,pos,l,mid(l,r),nd * 2);
upd(v,pos,mid(l,r)+1,r,nd*2+1);
T[nd][2] = 0;
T1[nd][2] = 0;
T[nd][1] = max(T[nd * 2][1],T[nd * 2 + 1][1]);
T1[nd][1] = min(T1[nd * 2][1],T1[nd * 2 + 1][1]);
}
}
int main()
{
cin>>n;
for(int i = 1;i <= n;i++){
cin >> r >> t;
if(r > mx){
mx = r;
mt = t;
}
if(t == 1)
upd(-1,r,1,n,1);
else upd(1,r,1,n,1);
if(mt == 1)
if(T[1][1] <= 0) cout << ">\n";
else cout << "?\n";
else {
if(T1[1][1] >= 0) cout << "<\n";
else cout << "?\n";
}
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
3 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
1 ms |
376 KB |
Output is correct |
4 |
Correct |
2 ms |
256 KB |
Output is correct |
5 |
Correct |
3 ms |
380 KB |
Output is correct |
6 |
Correct |
4 ms |
376 KB |
Output is correct |
7 |
Correct |
5 ms |
376 KB |
Output is correct |
8 |
Correct |
7 ms |
504 KB |
Output is correct |
9 |
Correct |
6 ms |
376 KB |
Output is correct |
10 |
Correct |
35 ms |
1320 KB |
Output is correct |
11 |
Runtime error |
3 ms |
888 KB |
Execution killed with signal 11 (could be triggered by violating memory limits) |
12 |
Halted |
0 ms |
0 KB |
- |