oj.uz

Submission #706694

# Submission time Handle Problem Language Result Execution time Memory
706694 2023-03-07T11:40:42 Z Alihan_8 Crocodile's Underground City (IOI11_crocodile) C++17
100 / 100
 816 ms 68780 KB 
#include <bits/stdc++.h>
#include "crocodile.h"
// include <ext/pb_ds/assoc_container.hpp>
// include <ext/pb_ds/tree_policy.hpp>
// using namespace __gnu_pbds;
using namespace std;
#define all(x) x.begin(), x.end()
#define pb push_back
// define ordered_set tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update>
#define mpr make_pair
#define ln '\n'
void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
//#define int long long
typedef long long ll;
int travel_plan(int N, int M, int R[][2], int L[], int K, int P[]){
    int n = N, m = M, k = K;
    vector <pair<ll,int>> g[n];
    for ( int i = 0; i < m; i++ ){
        auto [x, y] = R[i];
        g[x].pb({L[i], y});
        g[y].pb({L[i], x});
    }
    const ll inf = 1e18+1;
    set <pair<ll,ll>> st;
    vector <pair<ll,ll>> dis(n, {inf, inf});
    for ( int i = 0; i < k; i++ ){
        dis[P[i]] = {0, 0};
        st.insert({0, P[i]});
    }
    while ( !st.empty() ){
        auto [val, cur] = *st.begin();
        st.erase(st.begin());
        for ( auto [w, to]: g[cur] ){
            ll new_dis = val+w;
            auto &[l, r] = dis[to];
            if ( l > new_dis ){
                st.erase({r, to});
                r = l, l = new_dis;
                st.insert({r, to});
            }
            else if ( r > new_dis ){
                st.erase({r, to});
                r = new_dis;
                st.insert({r, to});
            }
        }
    }
    return dis[0].second;
}
#if false
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n, m, k; cin >> n >> m >> k;
    int R[m][2], L[m], p[k];
    for ( int i = 0; i < m; i++ ){
        cin >> R[i][0] >> R[i][1];
    }
    for ( int i = 0; i < m; i++ ) cin >> L[i];
    for ( int i = 0; i < k; i++ ) cin >> p[i];
    cout << travel_plan(n, m, R, L, k, p);

    cout << '\n';
/*
5 4 3
0 1
0 2
3 2
2 4
2 3 1 4
1 3 4
answer: 7

5 7 2
0 2
0 3
3 2
2 1
0 1
0 4
3 4
4 3 2 10 100 7 9
1 3
answer: 14
*/
}
#endif

Compilation message

crocodile.cpp: In function 'void IO(std::string)':
crocodile.cpp:12:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
crocodile.cpp:12:70: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                                                               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 2 ms 684 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 3 ms 852 KB Output is correct
13 Correct 3 ms 980 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 2 ms 684 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 3 ms 852 KB Output is correct
13 Correct 3 ms 980 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 507 ms 63176 KB Output is correct
17 Correct 76 ms 14356 KB Output is correct
18 Correct 148 ms 16592 KB Output is correct
19 Correct 816 ms 68780 KB Output is correct
20 Correct 263 ms 52740 KB Output is correct
21 Correct 43 ms 6604 KB Output is correct
22 Correct 344 ms 48140 KB Output is correct