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Submission #815945

# Submission time Handle Problem Language Result Execution time Memory
815945 2023-08-09T02:48:41 Z makanhulia Lasers (NOI19_lasers) C++17
21 / 100
 45 ms 11104 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long

int presum[500005], start[500005], close[500005];

signed main() {
  int l, r, x, w;
  cin >> l >> r;
  for (int i = 1; i <= r; i++) {
    cin >> x;
    for (int j = 1; j <= x; j++) {
      cin >> w;
      presum[j] = presum[j-1] + w;
    }
    int gap = l - presum[x];
    for (int j = 1; j <= x; j++) {
      if (presum[j-1] + gap + 1 <= presum[j]) {
        start[presum[j-1] + gap + 1]++;
        close[presum[j]]++;
      }
    }
  }

  // Line Sweep

  int count = 0, save, ans = 0;
  for (int i = 1; i <= l; i++) {
    // cout << i << " " << start[i] << " " << close[i] << endl;
    if (start[i] == 0 and close[i] == 0) continue;

    if (count == 0) save = i;
    count += start[i];
    count -= close[i];
    if (count == 0) {
      ans += (i-save)+1;
    }
  }

  cout << ans << endl;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 340 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 340 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 45 ms 11104 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 45 ms 11104 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Runtime error 3 ms 340 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -