oj.uz

Submission #1102358

# Submission time Handle Problem Language Result Execution time Memory
1102358 2024-10-18T03:08:09 Z LTTrungCHL Airplane (NOI23_airplane) C++17
63 / 100
 401 ms 16840 KB 
///***LTT***///
/// ->NHAT QUOC GIA<- ///
#include<bits/stdc++.h>
//#pragma GCC optimize ("O3")
//#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("popcnt")
//#define int long long
#define endl "\n"
#define F first
#define S second
#define pb push_back
using namespace std;
vector <int> lg2;
//void MAKE_LOG_ARR(int n){
//    lg2.resize(n + 3);
//    for (int i = 1;i <= n;++i){
//        lg2[i] = __lg(i);
//    }
//}
const long long oo = 1e9+7;
const int N = 2 * 1e5 + 10;
int n, a[N], m;
vector <int> adj[N];
namespace sub2{
    long long dis[N];
    priority_queue <pair <long long, int>> pq;
    void solve(){
        long long ans = oo * oo;
        for (int i = 1;i <= n;++i){
            for (int j = 1;j <= n;++j){
                dis[j] = oo * oo;
            }
            dis[1] = 0;
            pq.push({0,1});
            while (!pq.empty()){
                int u = pq.top().S;
                long long d = -pq.top().F;
                pq.pop();
                for (int v : adj[u]){
                    if (a[v] > a[i]) continue;
                    int nxt = (d < a[v] ? a[v] : d + 1);
                    if (nxt < dis[v]){
                        dis[v] = nxt;
                        pq.push({-dis[v], v});
                    }
                }
            }
            long long res = dis[i];
            for (int j = 1;j <= n;++j){
                dis[j] = oo * oo;
            }
            dis[n] = 0;
            pq.push({0,n});
            while (!pq.empty()){
                int u = pq.top().S;
                long long d = -pq.top().F;
                pq.pop();
                for (int v : adj[u]){
                    if (a[v] > a[i]) continue;
                    int nxt = (d < a[v] ? a[v] : d + 1);
                    if (nxt < dis[v]){
                        dis[v] = nxt;
                        pq.push({-dis[v], v});
                    }
                }
            }
            res += dis[i];
            ans = min(ans, res);
        }
        cout << ans;
    }
};
namespace sub1{
    long long dis[N], dis2[N];
    void solve(){
        int mx = 1;
        for (int i = 2;i <= n;++i){
            if (a[mx] < a[i]){
                mx = i;
            }
        }
        for (int i = 2;i <= n;++i){
            int nxt = (dis[i - 1] < a[i] ? a[i] : dis[i - 1] + 1);
            dis[i] = nxt;
        }
        for (int i = n - 1;i >= 1;--i){
            int nxt = (dis2[i + 1] < a[i] ? a[i] : dis2[i + 1] + 1);
            dis2[i] = nxt;
        }
        long long ans = oo * oo;
        ans = min(ans, dis[mx] + dis2[mx]);
        cout << ans;
        return;
    }
};
void solve(){
    cin >> n >> m;
    for (int i = 1;i <= n;++i){
        cin >> a[i];
    }
    bool cksub1 = true;
    for (int i = 1;i <= m;++i){
        int u, v;
        cin >> u >> v;
        adj[u].pb(v);
        adj[v].pb(u);
        if (v != u + 1){
            cksub1 = false;
        }
    }
    if (m == n - 1 and cksub1){
        sub1::solve();
        return;
    }
    if (n <= 2000 and m <= 4000){
        sub2::solve();
        return;
    }
    return;
}
int main(){
    ios_base::sync_with_stdio(NULL);
    cin.tie(NULL);
    cout.tie(NULL);
    if (fopen("ltt.inp", "r")){
        freopen("ltt.inp", "r", stdin);
        freopen("ltt.out", "w", stdout);
    }
//    int t;
//    cin >> t;
//    while(t--){
    solve();
//    }
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:126:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  126 |         freopen("ltt.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:127:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  127 |         freopen("ltt.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7504 KB Output is correct
2 Correct 46 ms 16712 KB Output is correct
3 Correct 48 ms 16712 KB Output is correct
4 Correct 50 ms 16724 KB Output is correct
5 Correct 48 ms 16712 KB Output is correct
6 Correct 50 ms 16712 KB Output is correct
7 Correct 51 ms 16840 KB Output is correct
8 Correct 2 ms 7676 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7504 KB Output is correct
2 Correct 2 ms 7504 KB Output is correct
3 Correct 2 ms 7504 KB Output is correct
4 Correct 2 ms 7504 KB Output is correct
5 Correct 3 ms 7672 KB Output is correct
6 Correct 13 ms 7704 KB Output is correct
7 Correct 79 ms 7504 KB Output is correct
8 Correct 32 ms 7504 KB Output is correct
9 Correct 202 ms 7504 KB Output is correct
10 Correct 47 ms 7504 KB Output is correct
11 Correct 216 ms 7504 KB Output is correct
12 Correct 73 ms 7504 KB Output is correct
13 Correct 242 ms 7504 KB Output is correct
14 Correct 316 ms 7732 KB Output is correct
15 Correct 400 ms 8008 KB Output is correct
16 Correct 401 ms 7932 KB Output is correct
17 Correct 377 ms 7504 KB Output is correct
18 Correct 2 ms 7504 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7504 KB Output is correct
2 Correct 2 ms 7504 KB Output is correct
3 Correct 2 ms 7504 KB Output is correct
4 Correct 2 ms 7504 KB Output is correct
5 Correct 3 ms 7672 KB Output is correct
6 Correct 13 ms 7704 KB Output is correct
7 Correct 79 ms 7504 KB Output is correct
8 Correct 32 ms 7504 KB Output is correct
9 Correct 202 ms 7504 KB Output is correct
10 Correct 47 ms 7504 KB Output is correct
11 Correct 216 ms 7504 KB Output is correct
12 Correct 73 ms 7504 KB Output is correct
13 Correct 242 ms 7504 KB Output is correct
14 Correct 316 ms 7732 KB Output is correct
15 Correct 400 ms 8008 KB Output is correct
16 Correct 401 ms 7932 KB Output is correct
17 Correct 377 ms 7504 KB Output is correct
18 Correct 2 ms 7504 KB Output is correct
19 Correct 58 ms 7504 KB Output is correct
20 Correct 22 ms 7716 KB Output is correct
21 Correct 84 ms 7504 KB Output is correct
22 Correct 144 ms 7504 KB Output is correct
23 Correct 26 ms 7504 KB Output is correct
24 Correct 95 ms 7504 KB Output is correct
25 Correct 170 ms 7504 KB Output is correct
26 Correct 267 ms 7504 KB Output is correct
27 Correct 308 ms 7504 KB Output is correct
28 Correct 242 ms 7760 KB Output is correct
29 Correct 351 ms 7928 KB Output is correct
30 Correct 339 ms 7760 KB Output is correct

Subtask #4
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7504 KB Output is correct
2 Correct 46 ms 16712 KB Output is correct
3 Correct 48 ms 16712 KB Output is correct
4 Correct 50 ms 16724 KB Output is correct
5 Correct 48 ms 16712 KB Output is correct
6 Correct 50 ms 16712 KB Output is correct
7 Correct 51 ms 16840 KB Output is correct
8 Correct 2 ms 7676 KB Output is correct
9 Correct 3 ms 7504 KB Output is correct
10 Correct 2 ms 7504 KB Output is correct
11 Correct 2 ms 7504 KB Output is correct
12 Correct 2 ms 7504 KB Output is correct
13 Correct 3 ms 7672 KB Output is correct
14 Correct 13 ms 7704 KB Output is correct
15 Correct 79 ms 7504 KB Output is correct
16 Correct 32 ms 7504 KB Output is correct
17 Correct 202 ms 7504 KB Output is correct
18 Correct 47 ms 7504 KB Output is correct
19 Correct 216 ms 7504 KB Output is correct
20 Correct 73 ms 7504 KB Output is correct
21 Correct 242 ms 7504 KB Output is correct
22 Correct 316 ms 7732 KB Output is correct
23 Correct 400 ms 8008 KB Output is correct
24 Correct 401 ms 7932 KB Output is correct
25 Correct 377 ms 7504 KB Output is correct
26 Correct 2 ms 7504 KB Output is correct
27 Correct 58 ms 7504 KB Output is correct
28 Correct 22 ms 7716 KB Output is correct
29 Correct 84 ms 7504 KB Output is correct
30 Correct 144 ms 7504 KB Output is correct
31 Correct 26 ms 7504 KB Output is correct
32 Correct 95 ms 7504 KB Output is correct
33 Correct 170 ms 7504 KB Output is correct
34 Correct 267 ms 7504 KB Output is correct
35 Correct 308 ms 7504 KB Output is correct
36 Correct 242 ms 7760 KB Output is correct
37 Correct 351 ms 7928 KB Output is correct
38 Correct 339 ms 7760 KB Output is correct
39 Incorrect 60 ms 14560 KB Output isn't correct
40 Halted 0 ms 0 KB -