oj.uz

Submission #991012

# Submission time Handle Problem Language Result Execution time Memory
991012 2024-06-01T04:09:53 Z Pacybwoah Passport (JOI23_passport) C++17
16 / 100
 1841 ms 1048576 KB 
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,avx2,bmi,bmi2")
#include<iostream>
#include<vector>
#include<utility>
#include<map>
using namespace std;
struct st{
    vector<int> vec;
    st(int n){
        vec.resize(4 * n + 4);
    }
    void build(int l, int r, int ind, vector<int>& sr){
        if(l == r){
            vec[ind] = sr[l];
        }
        else{
            int mid = (l + r) >> 1;
            build(l, mid, ind * 2, sr);
            build(mid + 1, r, ind * 2 + 1, sr);
            vec[ind] = min(vec[ind * 2], vec[ind * 2 + 1]);
        }
    }
    void modify(int l, int r, int num, int pos, int ind){
        if(l == r){
            vec[ind] = num;
            return;
        }
        int mid = (l + r) >> 1;
        if(pos <= mid) modify(l, mid, num, pos, ind * 2);
        else modify(mid + 1, r, num, pos, ind * 2 + 1);
        vec[ind] = min(vec[ind * 2], vec[ind * 2 + 1]);
    }
    int query(int l, int r, int start, int end, int ind){
        if(r < start || end < l) return 1e9;
        if(start <= l && r <= end) return vec[ind];
        int mid = (l + r) >> 1;
        return min(query(l, mid, start, end, ind * 2), query(mid + 1, r, start, end, ind * 2 + 1));
    }
};
int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<pair<int, int>> vec(n + 1);
    for(int i = 1; i <= n; i++) cin >> vec[i].first >> vec[i].second;
    map<pair<int, int>, vector<int>> m;
    for(int i = 1; i <= n; i++){
        m[vec[i]].push_back(i);
    }
    vector<vector<int>> dp(n + 1, vector<int>(n + 1, 1e9));
    dp[1][n] = 0;
    st mindp(n);
    vector<int> tmp(n + 1);
    vector<vector<int>> minl(n + 1, vector<int>(n + 1)), maxr(n + 1, vector<int>(n + 1));
    for(int i = 1; i <= n; i++) minl[i][i] = vec[i].first, maxr[i][i] = vec[i].second;
    for(int i = 1; i <= n; i++) for(int j = i + 1; j <= n; j++) minl[i][j] = min(minl[i][j - 1], vec[j].first), maxr[i][j] = max(maxr[i][j - 1], vec[j].second);
    for(int i = 1; i <= n; i++) tmp[i] = 1e9;
    mindp.build(1, n, 1, tmp);
    for(auto x: m[make_pair(1, n)]){
        mindp.modify(1, n, dp[1][n], x, 1);
    }
    for(int l = n - 1; l > 0; l--){
        for(int i = 1; i + l - 1 <= n; i++){
            int j = i + l - 1;
            if(n <= 300) dp[i][j] = min(dp[i][j], dp[minl[i][j]][j] + 1);
            if(n <= 300) dp[i][j] = min(dp[i][j], dp[i][maxr[i][j]] + 1);
            dp[i][j] = min(dp[i][j], mindp.query(1, n, i, j, 1) + 1);
            for(auto x: m[make_pair(i, j)]){
                mindp.modify(1, n, dp[i][j], x, 1);
            }
        }
    }
    int q;
    cin >> q;
    while(q--){
        int a;
        cin >> a;
        if(dp[a][a] == 1e9) cout << "-1\n";
        else cout << dp[a][a] << "\n";
    }
}
// g++ -std=gnu++20 pC.cpp -o run -Wall -Wextra -fsanitize=undefined -fsanitize=address

Subtask #1
0 / 6.0

# 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 Runtime error 495 ms 1048576 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# 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 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 376 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 13 ms 4596 KB Output is correct
12 Correct 15 ms 4956 KB Output is correct
13 Correct 14 ms 4956 KB Output is correct
14 Correct 13 ms 4696 KB Output is correct
15 Correct 13 ms 5108 KB Output is correct

Subtask #3
0 / 24.0

# 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 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 376 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 13 ms 4596 KB Output is correct
12 Correct 15 ms 4956 KB Output is correct
13 Correct 14 ms 4956 KB Output is correct
14 Correct 13 ms 4696 KB Output is correct
15 Correct 13 ms 5108 KB Output is correct
16 Incorrect 1841 ms 278800 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #4
0 / 8.0

# 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 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 376 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 13 ms 4596 KB Output is correct
12 Correct 15 ms 4956 KB Output is correct
13 Correct 14 ms 4956 KB Output is correct
14 Correct 13 ms 4696 KB Output is correct
15 Correct 13 ms 5108 KB Output is correct
16 Incorrect 1841 ms 278800 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #5
0 / 46.0

# 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 Runtime error 495 ms 1048576 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -