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Submission #255411

# Submission time Handle Problem Language Result Execution time Memory
255411 2020-07-31T21:46:48 Z hhh07 Crocodile's Underground City (IOI11_crocodile) C++14
100 / 100
 680 ms 73068 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <utility>
#include <set>
#include <cmath>
#include <climits>
#include <cstring>
#include "crocodile.h"
 
using namespace std;
 
typedef long long ll;
typedef vector<ll> vi;
typedef pair<ll, ll> ii;

vector<vector<ii>> adjList(100007, vector<ii>());
const int INF = 1e9 + 7;
int travel_plan(int n, int m, int r[][2], int l[], int k, int p[]){
    for (ll i = 0; i < m; i++){
        adjList[r[i][0]].push_back(make_pair(r[i][1], l[i]));
        adjList[r[i][1]].push_back(make_pair(r[i][0], l[i]));
    }
    
    vector<ii> t(n, {INF, INF});
    priority_queue<ii, vector<ii>, greater<ii>> pq;
    for (ll i = 0; i < k; i++){
        t[p[i]] = {0, 0};
        pq.push({0, p[i]});
    }
    
    while(!pq.empty()){
        auto curr = pq.top();
        pq.pop();
        if (t[curr.second].first != curr.first)
            continue;
        for (ll i = 0; i < adjList[curr.second].size(); i++){
            ll d = adjList[curr.second][i].second, idx = adjList[curr.second][i].first;
            ll val = curr.first + d;
            if (t[idx].first > val){
                int prev = t[idx].first;
                t[idx].first = val;
                if (t[idx].second > t[idx].first)
                    swap(t[idx].first, t[idx].second);
                
                if (t[idx].first != prev)
                    pq.push({t[idx].first, idx});
            }
            
            
        }
    }
    
    
    return t[0].first;
}

Compilation message

crocodile.cpp: In function 'int travel_plan(int, int, int (*)[2], int*, int, int*)':
crocodile.cpp:38:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (ll i = 0; i < adjList[curr.second].size(); i++){
                        ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB Output is correct
2 Correct 1 ms 2688 KB Output is correct
3 Correct 2 ms 2688 KB Output is correct
4 Correct 2 ms 2816 KB Output is correct
5 Correct 2 ms 2816 KB Output is correct
6 Correct 3 ms 2816 KB Output is correct
7 Correct 2 ms 2816 KB Output is correct
8 Correct 2 ms 2816 KB Output is correct

Subtask #2
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB Output is correct
2 Correct 1 ms 2688 KB Output is correct
3 Correct 2 ms 2688 KB Output is correct
4 Correct 2 ms 2816 KB Output is correct
5 Correct 2 ms 2816 KB Output is correct
6 Correct 3 ms 2816 KB Output is correct
7 Correct 2 ms 2816 KB Output is correct
8 Correct 2 ms 2816 KB Output is correct
9 Correct 5 ms 3072 KB Output is correct
10 Correct 2 ms 2688 KB Output is correct
11 Correct 2 ms 2816 KB Output is correct
12 Correct 6 ms 3328 KB Output is correct
13 Correct 5 ms 3456 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 3 ms 2816 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2688 KB Output is correct
2 Correct 1 ms 2688 KB Output is correct
3 Correct 2 ms 2688 KB Output is correct
4 Correct 2 ms 2816 KB Output is correct
5 Correct 2 ms 2816 KB Output is correct
6 Correct 3 ms 2816 KB Output is correct
7 Correct 2 ms 2816 KB Output is correct
8 Correct 2 ms 2816 KB Output is correct
9 Correct 5 ms 3072 KB Output is correct
10 Correct 2 ms 2688 KB Output is correct
11 Correct 2 ms 2816 KB Output is correct
12 Correct 6 ms 3328 KB Output is correct
13 Correct 5 ms 3456 KB Output is correct
14 Correct 2 ms 2688 KB Output is correct
15 Correct 3 ms 2816 KB Output is correct
16 Correct 556 ms 66540 KB Output is correct
17 Correct 97 ms 14468 KB Output is correct
18 Correct 129 ms 16632 KB Output is correct
19 Correct 680 ms 73068 KB Output is correct
20 Correct 351 ms 54404 KB Output is correct
21 Correct 43 ms 8440 KB Output is correct
22 Correct 363 ms 49912 KB Output is correct