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Submission #1092117

# Submission time Handle Problem Language Result Execution time Memory
1092117 2024-09-23T08:55:00 Z juicy Weighting stones (IZhO11_stones) C++17
100 / 100
 27 ms 4460 KB 
#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

const int N = 1e5 + 5;

int n;
int s[4 * N], mn[4 * N], mx[4 * N];

void upd(int i, int x, int id = 1, int l = 1, int r = n) {
  if (l == r) {
    s[id] = mn[id] = mx[id] = x;
    return;
  }
  int m = (l + r) / 2;
  if (i <= m) {
    upd(i, x, id * 2, l, m);
  } else {
    upd(i, x, id * 2 + 1, m + 1, r);
  }
  s[id] = s[id * 2] + s[id * 2 + 1];
  mn[id] = min(mn[id * 2] + s[id * 2 + 1], mn[id * 2 + 1]);
  mx[id] = max(mx[id * 2] + s[id * 2 + 1], mx[id * 2 + 1]);
}

int main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);

  cin >> n;
  for (int i = 0; i < n; ++i) {
    int r, s; cin >> r >> s;
    upd(r, s == 1 ? 1 : -1);
    cout << (mx[1] <= 0 ? '<' : (mn[1] >= 0 ? '>' : '?')) << "\n";
  }
  return 0;
}

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 464 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 2 ms 860 KB Output is correct
11 Correct 16 ms 2396 KB Output is correct
12 Correct 27 ms 4372 KB Output is correct
13 Correct 24 ms 4444 KB Output is correct
14 Correct 25 ms 4436 KB Output is correct
15 Correct 27 ms 4436 KB Output is correct
16 Correct 27 ms 4432 KB Output is correct
17 Correct 23 ms 4436 KB Output is correct
18 Correct 27 ms 4436 KB Output is correct
19 Correct 25 ms 4252 KB Output is correct
20 Correct 23 ms 4436 KB Output is correct
21 Correct 26 ms 4460 KB Output is correct
22 Correct 24 ms 4436 KB Output is correct
23 Correct 23 ms 4444 KB Output is correct
24 Correct 24 ms 4356 KB Output is correct
25 Correct 23 ms 4448 KB Output is correct