oj.uz

Submission #574621

# Submission time Handle Problem Language Result Execution time Memory
574621 2022-06-09T00:29:47 Z penguinhacker Weighting stones (IZhO11_stones) C++14
100 / 100
 45 ms 4344 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ar array

const int mxN=1e5;
int n;

struct {
	int mn[1<<18], mx[1<<18], lz[1<<18];
	void psh(int u, int l, int r) {
		if (lz[u]) {
			mn[u]+=lz[u], mx[u]+=lz[u];
			if (l!=r)
				lz[2*u]+=lz[u], lz[2*u+1]+=lz[u];
			lz[u]=0;
		}
	}
	void upd(int ql, int qr, int x, int u=1, int l=0, int r=n-1) {
		psh(u, l, r);
		if (l>qr||r<ql)
			return;
		if (ql<=l&&r<=qr) {
			lz[u]+=x;
			psh(u, l, r);
			return;
		}
		int mid=(l+r)/2;
		upd(ql, qr, x, 2*u, l, mid);
		upd(ql, qr, x, 2*u+1, mid+1, r);
		mn[u]=min(mn[2*u], mn[2*u+1]);
		mx[u]=max(mx[2*u], mx[2*u+1]);
	}
} st;

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> n;
	for (int q=0; q<n; ++q) {
		int i, t;
		cin >> i >> t, --i;
		st.upd(0, i, t==1?1:-1);
		//cout << st.mx[1] << " " << st.mn[1] << "\n";
		cout << (st.mx[1]>0?st.mn[1]<0?'?':'>':'<') << "\n";
	}
	return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 328 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 396 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 6 ms 720 KB Output is correct
11 Correct 28 ms 2388 KB Output is correct
12 Correct 45 ms 4196 KB Output is correct
13 Correct 38 ms 4300 KB Output is correct
14 Correct 40 ms 4256 KB Output is correct
15 Correct 41 ms 4328 KB Output is correct
16 Correct 41 ms 4252 KB Output is correct
17 Correct 40 ms 4264 KB Output is correct
18 Correct 40 ms 4320 KB Output is correct
19 Correct 40 ms 4300 KB Output is correct
20 Correct 40 ms 4240 KB Output is correct
21 Correct 40 ms 4252 KB Output is correct
22 Correct 42 ms 4308 KB Output is correct
23 Correct 40 ms 4280 KB Output is correct
24 Correct 42 ms 4344 KB Output is correct
25 Correct 42 ms 4264 KB Output is correct