oj.uz

Submission #959743

# Submission time Handle Problem Language Result Execution time Memory
959743 2024-04-09T02:44:54 Z VinhLuu Passport (JOI23_passport) C++17
100 / 100
 880 ms 248932 KB 
#pragma GCC optimize("Ofast")
#pragma GCC optimize("O2,O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

#include <bits/stdc++.h>
#define int long long
//#define ll long long
#define fi first
#define se second
#define pb push_back
#define all(lmao) lmao.begin(), lmao.end()

using namespace std;

typedef pair<int,int> pii;
//typedef tuple<int,int,int> tp;
const int N = 1e6 + 5;
//const int mod = 1e9 + 7;
const int oo = 1e8;

int n, L[N], R[N], h[N << 2], id[N], f[N << 2];
vector<pii> p[N << 2];

void build(int i,int l,int r){
    if(l == r){
        id[l] = i;
        h[i] = 1;

        return;
    }
    int mid = (l + r) / 2;
    build(i << 1, l, mid);
    build(i << 1|1, mid + 1, r);
    p[i << 1].pb({i, 0});
    p[i << 1|1].pb({i, 0});
}

void update(int i,int l,int r,int u,int v,int x){
    if(l > r || l > v || r < u) return;
    if(u <= l && r <= v){
        p[i].pb({id[x], 1});
        return;
    }
    int mid = (l + r) / 2;
    update(i << 1, l, mid, u, v, x);
    update(i << 1|1, mid + 1, r, u, v, x);
}

int d[N << 2][5];

void cal(int st,int j){
    d[id[st]][j] = 0;
    priority_queue<pii, vector<pii>, greater<pii>> q; q.push({0, id[st]});
    while(!q.empty()){
        auto [g, u] = q.top();
        q.pop();
        if(g > d[u][j]) continue;
        for(auto [v, w] : p[u]) if(d[u][j] + w < d[v][j]){
            d[v][j] = d[u][j] + w;
            q.push({d[v][j], v});
        }
    }
}

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    #define task "v"
    if(fopen(task ".inp","r")){
        freopen(task ".inp","r",stdin);
        freopen(task ".out","w",stdout);
    }

    cin >> n;
    build(1, 1, n);
    for(int i = 1; i <= n; i ++){
        cin >> L[i] >> R[i];
        update(1, 1, n, L[i], R[i], i);
    }
    for(int i = 1; i <= 4 * n; i ++) d[i][0] = d[i][1] = oo;
    cal(1, 0);
    cal(n, 1);
    priority_queue<pii, vector<pii>, greater<pii>> pq;
    for(int i = 1; i <= 4 * n; i ++){
        if(id[1] == i || id[n] == i) f[i] = d[i][1] + d[i][0];
        else f[i] = d[i][1] + d[i][0] - h[i];
        pq.push({f[i], i});
    }
    while(!pq.empty()){
        auto [w, u] = pq.top();
        pq.pop();
        if(w > f[u]) continue;
        for(auto [v, g] : p[u]) if(w + g < f[v]) pq.push({f[v] = w + g, v});
    }
    int q;
    cin >> q;
    while(q--){
        int x; cin >> x;
        cout << (f[id[x]] >= oo ? -1 : f[id[x]]) << "\n";
    }
}

Compilation message

passport.cpp: In function 'int main()':
passport.cpp:71:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |         freopen(task ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
passport.cpp:72:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |         freopen(task ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 103000 KB Output is correct
2 Correct 27 ms 103004 KB Output is correct
3 Correct 27 ms 103004 KB Output is correct
4 Correct 838 ms 230420 KB Output is correct
5 Correct 397 ms 191172 KB Output is correct
6 Correct 256 ms 185588 KB Output is correct
7 Correct 272 ms 177540 KB Output is correct
8 Correct 238 ms 185752 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 103004 KB Output is correct
2 Correct 27 ms 103000 KB Output is correct
3 Correct 26 ms 102912 KB Output is correct
4 Correct 28 ms 103000 KB Output is correct
5 Correct 30 ms 103124 KB Output is correct
6 Correct 27 ms 103004 KB Output is correct
7 Correct 27 ms 103060 KB Output is correct
8 Correct 27 ms 103068 KB Output is correct
9 Correct 27 ms 103000 KB Output is correct
10 Correct 28 ms 102964 KB Output is correct
11 Correct 28 ms 103004 KB Output is correct
12 Correct 29 ms 103004 KB Output is correct
13 Correct 28 ms 102992 KB Output is correct
14 Correct 28 ms 103004 KB Output is correct
15 Correct 27 ms 103000 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 103004 KB Output is correct
2 Correct 27 ms 103000 KB Output is correct
3 Correct 26 ms 102912 KB Output is correct
4 Correct 28 ms 103000 KB Output is correct
5 Correct 30 ms 103124 KB Output is correct
6 Correct 27 ms 103004 KB Output is correct
7 Correct 27 ms 103060 KB Output is correct
8 Correct 27 ms 103068 KB Output is correct
9 Correct 27 ms 103000 KB Output is correct
10 Correct 28 ms 102964 KB Output is correct
11 Correct 28 ms 103004 KB Output is correct
12 Correct 29 ms 103004 KB Output is correct
13 Correct 28 ms 102992 KB Output is correct
14 Correct 28 ms 103004 KB Output is correct
15 Correct 27 ms 103000 KB Output is correct
16 Correct 32 ms 108112 KB Output is correct
17 Correct 31 ms 107860 KB Output is correct
18 Correct 32 ms 108380 KB Output is correct
19 Correct 32 ms 108380 KB Output is correct
20 Correct 30 ms 107856 KB Output is correct
21 Correct 33 ms 108120 KB Output is correct
22 Correct 30 ms 107800 KB Output is correct
23 Correct 32 ms 108120 KB Output is correct
24 Correct 31 ms 108124 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 103004 KB Output is correct
2 Correct 27 ms 103000 KB Output is correct
3 Correct 26 ms 102912 KB Output is correct
4 Correct 28 ms 103000 KB Output is correct
5 Correct 30 ms 103124 KB Output is correct
6 Correct 27 ms 103004 KB Output is correct
7 Correct 27 ms 103060 KB Output is correct
8 Correct 27 ms 103068 KB Output is correct
9 Correct 27 ms 103000 KB Output is correct
10 Correct 28 ms 102964 KB Output is correct
11 Correct 28 ms 103004 KB Output is correct
12 Correct 29 ms 103004 KB Output is correct
13 Correct 28 ms 102992 KB Output is correct
14 Correct 28 ms 103004 KB Output is correct
15 Correct 27 ms 103000 KB Output is correct
16 Correct 32 ms 108112 KB Output is correct
17 Correct 31 ms 107860 KB Output is correct
18 Correct 32 ms 108380 KB Output is correct
19 Correct 32 ms 108380 KB Output is correct
20 Correct 30 ms 107856 KB Output is correct
21 Correct 33 ms 108120 KB Output is correct
22 Correct 30 ms 107800 KB Output is correct
23 Correct 32 ms 108120 KB Output is correct
24 Correct 31 ms 108124 KB Output is correct
25 Correct 27 ms 103000 KB Output is correct
26 Correct 27 ms 103004 KB Output is correct
27 Correct 32 ms 108280 KB Output is correct
28 Correct 32 ms 108052 KB Output is correct
29 Correct 31 ms 107864 KB Output is correct
30 Correct 32 ms 108004 KB Output is correct
31 Correct 31 ms 108000 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 103000 KB Output is correct
2 Correct 27 ms 103004 KB Output is correct
3 Correct 27 ms 103004 KB Output is correct
4 Correct 838 ms 230420 KB Output is correct
5 Correct 397 ms 191172 KB Output is correct
6 Correct 256 ms 185588 KB Output is correct
7 Correct 272 ms 177540 KB Output is correct
8 Correct 238 ms 185752 KB Output is correct
9 Correct 27 ms 103004 KB Output is correct
10 Correct 27 ms 103000 KB Output is correct
11 Correct 26 ms 102912 KB Output is correct
12 Correct 28 ms 103000 KB Output is correct
13 Correct 30 ms 103124 KB Output is correct
14 Correct 27 ms 103004 KB Output is correct
15 Correct 27 ms 103060 KB Output is correct
16 Correct 27 ms 103068 KB Output is correct
17 Correct 27 ms 103000 KB Output is correct
18 Correct 28 ms 102964 KB Output is correct
19 Correct 28 ms 103004 KB Output is correct
20 Correct 29 ms 103004 KB Output is correct
21 Correct 28 ms 102992 KB Output is correct
22 Correct 28 ms 103004 KB Output is correct
23 Correct 27 ms 103000 KB Output is correct
24 Correct 32 ms 108112 KB Output is correct
25 Correct 31 ms 107860 KB Output is correct
26 Correct 32 ms 108380 KB Output is correct
27 Correct 32 ms 108380 KB Output is correct
28 Correct 30 ms 107856 KB Output is correct
29 Correct 33 ms 108120 KB Output is correct
30 Correct 30 ms 107800 KB Output is correct
31 Correct 32 ms 108120 KB Output is correct
32 Correct 31 ms 108124 KB Output is correct
33 Correct 27 ms 103000 KB Output is correct
34 Correct 27 ms 103004 KB Output is correct
35 Correct 32 ms 108280 KB Output is correct
36 Correct 32 ms 108052 KB Output is correct
37 Correct 31 ms 107864 KB Output is correct
38 Correct 32 ms 108004 KB Output is correct
39 Correct 31 ms 108000 KB Output is correct
40 Correct 880 ms 234712 KB Output is correct
41 Correct 441 ms 197060 KB Output is correct
42 Correct 544 ms 248664 KB Output is correct
43 Correct 544 ms 248932 KB Output is correct
44 Correct 279 ms 186536 KB Output is correct
45 Correct 372 ms 200696 KB Output is correct
46 Correct 185 ms 141640 KB Output is correct
47 Correct 546 ms 202508 KB Output is correct
48 Correct 445 ms 216856 KB Output is correct