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Submission #603192

# Submission time Handle Problem Language Result Execution time Memory
603192 2022-07-23T16:45:52 Z Ahmadsm2005 Event Hopping (BOI22_events) C++17
10 / 100
 1500 ms 199192 KB 
#include <bits/stdc++.h>
//#define int long long
using namespace std;
int N,Q,S[5001],E[5001],X,Y;
vector<int>ADJ[5001];
bool VIS[5001];
int DIST[5001][5001];
void BFS(int x,int DIS = 0){
for(int i = 0;i < N; i += 1)VIS[i] = 0;
queue<pair<int,int>>Q;
Q.push({x,0});
DIST[x][x] = 0;
VIS[x] = 1;
while(Q.size()){
    int V = Q.front().first, S = Q.front().second;
    Q.pop();
    for(int i = 0; i <ADJ[V].size(); i += 1){
        if(!VIS[ADJ[V][i]])
            Q.push({ADJ[V][i], S + 1}),VIS[ADJ[V][i]] = 1,DIST[x][ADJ[V][i]] = S + 1;
    }
}
}
int32_t main()
{
    cin.tie(0),iostream::sync_with_stdio(0);
    cin>>N>>Q;
    for(int i = 0; i < N; i += 1)for(int l = 0; l < N; l += 1)DIST[i][l] = -1;
    for(int i = 0; i < N; i += 1){
        cin>>S[i]>>E[i];
    }
    for(int i = 0; i < N; i += 1){
        for(int l = 0; l < N; l += 1){
            if(S[l] <= E[i]&&E[i]<=E[l])
                ADJ[i].push_back(l);
        }
    }
    for(int i = 0; i < N; i += 1)BFS(i);
    while(Q--){
        cin>>X>>Y;
        (DIST[X - 1][Y - 1] == -1?cout<<"impossible\n":cout<<DIST[X - 1][Y - 1]<<'\n');
    }
}

Compilation message

events.cpp: In function 'void BFS(int, int)':
events.cpp:17:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for(int i = 0; i <ADJ[V].size(); i += 1){
      |                    ~~^~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Runtime error 158 ms 199192 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 24 ms 8404 KB Output is correct
4 Correct 16 ms 8432 KB Output is correct
5 Correct 27 ms 8436 KB Output is correct
6 Correct 58 ms 9180 KB Output is correct
7 Correct 149 ms 10004 KB Output is correct
8 Correct 180 ms 11076 KB Output is correct
9 Correct 922 ms 12420 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 24 ms 8404 KB Output is correct
4 Correct 16 ms 8432 KB Output is correct
5 Correct 27 ms 8436 KB Output is correct
6 Correct 58 ms 9180 KB Output is correct
7 Correct 149 ms 10004 KB Output is correct
8 Correct 180 ms 11076 KB Output is correct
9 Correct 922 ms 12420 KB Output is correct
10 Correct 0 ms 468 KB Output is correct
11 Correct 1 ms 488 KB Output is correct
12 Correct 27 ms 8428 KB Output is correct
13 Correct 21 ms 8444 KB Output is correct
14 Correct 26 ms 8420 KB Output is correct
15 Correct 58 ms 9216 KB Output is correct
16 Correct 151 ms 10024 KB Output is correct
17 Correct 176 ms 11092 KB Output is correct
18 Correct 973 ms 12424 KB Output is correct
19 Execution timed out 1581 ms 128384 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 24 ms 8404 KB Output is correct
4 Correct 16 ms 8432 KB Output is correct
5 Correct 27 ms 8436 KB Output is correct
6 Correct 58 ms 9180 KB Output is correct
7 Correct 149 ms 10004 KB Output is correct
8 Correct 180 ms 11076 KB Output is correct
9 Correct 922 ms 12420 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 468 KB Output is correct
12 Correct 24 ms 8404 KB Output is correct
13 Correct 21 ms 8452 KB Output is correct
14 Correct 28 ms 8420 KB Output is correct
15 Correct 62 ms 9212 KB Output is correct
16 Correct 162 ms 9940 KB Output is correct
17 Correct 175 ms 11096 KB Output is correct
18 Correct 1031 ms 12416 KB Output is correct
19 Runtime error 198 ms 199140 KB Execution killed with signal 11
20 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 176 ms 199140 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Runtime error 158 ms 199192 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -