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Submission #676511

# Submission time Handle Problem Language Result Execution time Memory
676511 2022-12-31T05:51:04 Z QwertyPi Weighting stones (IZhO11_stones) C++14
100 / 100
 176 ms 4508 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 1e5 + 11;
struct SegTree{
	int mx[MAXN << 2], mn[MAXN << 2], s[MAXN << 2];
	void add(int pos, int val, int v, int l, int r){
		if(l == r){
			mx[v] = mn[v] = s[v] = val;
			return;
		}
		int m = (l + r) / 2;
		if(pos <= m){
			add(pos, val, v * 2 + 1, l, m);
		}else{
			add(pos, val, v * 2 + 2, m + 1, r);
		}
		s[v] = s[v * 2 + 1] + s[v * 2 + 2];
		mx[v] = max(mx[v * 2 + 2], s[v * 2 + 2] + mx[v * 2 + 1]);
		mn[v] = min(mn[v * 2 + 2], s[v * 2 + 2] + mn[v * 2 + 1]);
	}
} segTree;

int main(){
	int n; cin >> n;
	for(int i = 0; i < n; i++){
		int r, s; cin >> r >> s;
		segTree.add(r, s == 1 ? 1 : -1, 0, 1, n);
		if(segTree.mx[0] > 0 && segTree.mn[0] < 0){
			cout << '?' << endl;
		}else if(segTree.mx[0] > 0){
			cout << '>' << endl;
		}else{
			cout << '<' << endl;
		}
	}
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 308 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 308 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 3 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 16 ms 780 KB Output is correct
11 Correct 100 ms 2368 KB Output is correct
12 Correct 162 ms 4172 KB Output is correct
13 Correct 175 ms 4288 KB Output is correct
14 Correct 172 ms 4300 KB Output is correct
15 Correct 169 ms 4328 KB Output is correct
16 Correct 176 ms 4276 KB Output is correct
17 Correct 167 ms 4324 KB Output is correct
18 Correct 166 ms 4300 KB Output is correct
19 Correct 175 ms 4508 KB Output is correct
20 Correct 166 ms 4300 KB Output is correct
21 Correct 168 ms 4312 KB Output is correct
22 Correct 168 ms 4328 KB Output is correct
23 Correct 171 ms 4372 KB Output is correct
24 Correct 166 ms 4280 KB Output is correct
25 Correct 169 ms 4404 KB Output is correct