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Submission #913903

# Submission time Handle Problem Language Result Execution time Memory
913903 2024-01-20T13:04:37 Z daoquanglinh2007 Weighting stones (IZhO11_stones) C++17
100 / 100
 39 ms 5616 KB 
#include <bits/stdc++.h>
using namespace std;
 
const int NM = 1e5;
 
struct node{
	int mn, mx;
};
 
int N;
node st[4*NM+5];
int lazy[4*NM+5];
 
void apply(int id, int val){
	st[id].mn += val;
	st[id].mx += val;
}
 
void down(int id){
	apply(2*id, lazy[id]); apply(2*id+1, lazy[id]);
	lazy[2*id] += lazy[id], lazy[2*id+1] += lazy[id];
	lazy[id] = 0;
}
 
node operator + (node a, node b){
	node c;
	c.mn = min(a.mn, b.mn);
	c.mx = max(a.mx, b.mx);
	return c;
}
 
void update(int id, int l, int r, int u, int v, int val){
	if (v < l || u > r) return;
	if (l >= u && r <= v){
		apply(id, val);
		lazy[id] += val;
		return;
	}
	down(id);
	int mid = (l+r)/2;
	update(2*id, l, mid, u, v, val);
	update(2*id+1, mid+1, r, u, v, val);
	st[id] = st[2*id]+st[2*id+1];
}
 
int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	cin >> N;
	for (int i = 1; i <= N; i++){
		int R, S; cin >> R >> S;
		R = N-R+1;
		if (S == 1){
			update(1, 1, N, R, N, 1);
		}
		else{
			update(1, 1, N, R, N, -1);
		}
		if (st[1].mn >= 0) cout << '>';
		else if (st[1].mx <= 0) cout << '<';
		else cout << '?';
		cout << '\n';
	}
	return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2508 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2520 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 2 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 3 ms 2692 KB Output is correct
11 Correct 19 ms 5212 KB Output is correct
12 Correct 32 ms 5584 KB Output is correct
13 Correct 31 ms 5468 KB Output is correct
14 Correct 36 ms 5460 KB Output is correct
15 Correct 32 ms 5476 KB Output is correct
16 Correct 34 ms 5608 KB Output is correct
17 Correct 32 ms 5616 KB Output is correct
18 Correct 32 ms 5460 KB Output is correct
19 Correct 31 ms 5468 KB Output is correct
20 Correct 32 ms 5460 KB Output is correct
21 Correct 36 ms 5464 KB Output is correct
22 Correct 37 ms 5528 KB Output is correct
23 Correct 32 ms 5460 KB Output is correct
24 Correct 39 ms 5572 KB Output is correct
25 Correct 32 ms 5468 KB Output is correct