oj.uz

Submission #559815

# Submission time Handle Problem Language Result Execution time Memory
559815 2022-05-10T16:22:16 Z SSRS Selling RNA Strands (JOI16_selling_rna) C++14
100 / 100
 532 ms 48092 KB 
#include <bits/stdc++.h>
using namespace std;
struct binary_indexed_tree{
  int N;
  vector<int> BIT;
  binary_indexed_tree(int N): N(N), BIT(N + 1, 0){
  }
  void add(int i){
    i++;
    while (i <= N){
      BIT[i]++;
      i += i & -i;
    }
  }
  int sum(int i){
    int ans = 0;
    while (i > 0){
      ans += BIT[i];
      i -= i & -i;
    }
    return ans;
  }
  int sum(int L, int R){
    return sum(R) - sum(L);
  }
};
int main(){
  int N, M;
  cin >> N >> M;
  vector<string> S(N);
  for (int i = 0; i < N; i++){
    cin >> S[i];
  }
  vector<string> P(M), Q(M);
  for (int i = 0; i < M; i++){
    cin >> P[i] >> Q[i];
    reverse(Q[i].begin(), Q[i].end());
  }
  vector<pair<string, int>> P1(N);
  for (int i = 0; i < N; i++){
    P1[i] = make_pair(S[i], i);
  }
  for (int i = 0; i < N; i++){
    reverse(S[i].begin(), S[i].end());
  }
  vector<pair<string, int>> P2(N);
  for (int i = 0; i < N; i++){
    P2[i] = make_pair(S[i], i);
  }
  sort(P1.begin(), P1.end());
  sort(P2.begin(), P2.end());
  vector<int> L1(M), R1(M), L2(M), R2(M);
  for (int i = 0; i < M; i++){
    L1[i] = lower_bound(P1.begin(), P1.end(), make_pair(P[i], 0)) - P1.begin();
    P[i].back()++;
    R1[i] = lower_bound(P1.begin(), P1.end(), make_pair(P[i], 0)) - P1.begin();
    L2[i] = lower_bound(P2.begin(), P2.end(), make_pair(Q[i], 0)) - P2.begin();
    Q[i].back()++;
    R2[i] = lower_bound(P2.begin(), P2.end(), make_pair(Q[i], N)) - P2.begin();
  }
  vector<int> X(N), Y(N);
  for (int i = 0; i < N; i++){
    X[P1[i].second] = i;
    Y[P2[i].second] = i;
  }
  vector<vector<int>> query_add(N + 1), query_sub(N + 1);
  for (int i = 0; i < M; i++){
    query_sub[L1[i]].push_back(i);
    query_add[R1[i]].push_back(i);
  }
  vector<vector<int>> update(N + 1);
  for (int i = 0; i < N; i++){
    update[X[i]].push_back(Y[i]);
  }
  vector<int> ans(M, 0);
  binary_indexed_tree BIT(N);
  for (int i = 0; i <= N; i++){
    for (int j : query_add[i]){
      ans[j] += BIT.sum(L2[j], R2[j]);
    }
    for (int j : query_sub[i]){
      ans[j] -= BIT.sum(L2[j], R2[j]);
    }
    for (int j : update[i]){
      BIT.add(j);
    }
  }
  for (int i = 0; i < M; i++){
    cout << ans[i] << endl;
  }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 300 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 14544 KB Output is correct
2 Correct 121 ms 15576 KB Output is correct
3 Correct 126 ms 15152 KB Output is correct
4 Correct 122 ms 15680 KB Output is correct
5 Correct 77 ms 10692 KB Output is correct
6 Correct 80 ms 10872 KB Output is correct
7 Correct 138 ms 17408 KB Output is correct
8 Correct 201 ms 19308 KB Output is correct
9 Correct 156 ms 19136 KB Output is correct
10 Correct 102 ms 13956 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 182 ms 16688 KB Output is correct
2 Correct 109 ms 10168 KB Output is correct
3 Correct 125 ms 13516 KB Output is correct
4 Correct 105 ms 11248 KB Output is correct
5 Correct 97 ms 10292 KB Output is correct
6 Correct 137 ms 13464 KB Output is correct

Subtask #4
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 300 KB Output is correct
8 Correct 101 ms 14544 KB Output is correct
9 Correct 121 ms 15576 KB Output is correct
10 Correct 126 ms 15152 KB Output is correct
11 Correct 122 ms 15680 KB Output is correct
12 Correct 77 ms 10692 KB Output is correct
13 Correct 80 ms 10872 KB Output is correct
14 Correct 138 ms 17408 KB Output is correct
15 Correct 201 ms 19308 KB Output is correct
16 Correct 156 ms 19136 KB Output is correct
17 Correct 102 ms 13956 KB Output is correct
18 Correct 182 ms 16688 KB Output is correct
19 Correct 109 ms 10168 KB Output is correct
20 Correct 125 ms 13516 KB Output is correct
21 Correct 105 ms 11248 KB Output is correct
22 Correct 97 ms 10292 KB Output is correct
23 Correct 137 ms 13464 KB Output is correct
24 Correct 173 ms 18608 KB Output is correct
25 Correct 237 ms 21996 KB Output is correct
26 Correct 147 ms 17572 KB Output is correct
27 Correct 191 ms 18592 KB Output is correct
28 Correct 532 ms 48092 KB Output is correct
29 Correct 468 ms 35496 KB Output is correct