oj.uz

Submission #1040159

# Submission time Handle Problem Language Result Execution time Memory
1040159 2024-07-31T17:18:56 Z Marco_Escandon Event Hopping (BOI22_events) C++11
10 / 100
 1500 ms 43260 KB 
#include<bits/stdc++.h>
using namespace std;
typedef int ll;
#define x first
#define y second
#pragma optimize("O3")
vector<vector<ll>> G( 5005);
vector<ll> v[5005];
vector<pair<ll,ll>> input;
void cmc(ll n,ll ini)
{
    v[ini].assign(n+1,1e9);
    queue<ll> q;
    q.push(ini);
    v[ini][ini]=0;
    map<ll,ll> mapa;
    mapa[input[ini].y]=1;
    while(!q.empty())
    {
        ll a=q.front();q.pop();
        for(auto i:G[a])
        {
            if(v[ini][i]==1e9)
            {
                v[ini][i]=v[ini][a]+1;
                if(mapa[input[i].y]==0)
                {
                    q.push(i);
                    mapa[input[i].y]=1;
                }
            }
        }
    }
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    ll n,q;
    cin>>n>>q;
    input.push_back({0,0});
    vector<pair<ll,ll>> cad;
    for(int i=1; i<=n; i++)
    {
        ll a,b;
        cin>>a>>b;
        input.push_back({a,b});
        cad.push_back({a,i});
        cad.push_back({b,i});
    }
    sort(cad.begin(),cad.end());
    set<ll> s;
    for(int i=0; i<cad.size(); i++)
    {
        vector<ll> temp,temp2;
        ll a=i;
        while(i<cad.size()&&cad[a].x==cad[i].x){
            temp.push_back(cad[i].y);
            i++;
        }
        i--;
        for(auto j:temp)
        {
            if(s.find(j)!=s.end())
                temp2.push_back(j);
            else s.insert(j);
        }
        for(auto j:temp2) for(auto k:s) G[j].push_back(k);
        for(auto j:temp2) if(s.find(j)!=s.end()) s.erase(j);
    }
    for(int i=1; i<=n; i++)
        cmc(n,i);
    for(int i=0; i<q; i++)
    {
        ll a,b;
        cin>>a>>b;
        a=v[a][b];
        if(a==1e9) cout<<"impossible"<<"\n";
        else cout<<a<<"\n";
    }
    return 0;
}

Compilation message

events.cpp:6: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    6 | #pragma optimize("O3")
      | 
events.cpp: In function 'int main()':
events.cpp:53:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     for(int i=0; i<cad.size(); i++)
      |                  ~^~~~~~~~~~~
events.cpp:57:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |         while(i<cad.size()&&cad[a].x==cad[i].x){
      |               ~^~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Runtime error 27 ms 6084 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 1 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 41 ms 4600 KB Output is correct
4 Correct 23 ms 4700 KB Output is correct
5 Correct 45 ms 4692 KB Output is correct
6 Correct 33 ms 5508 KB Output is correct
7 Correct 160 ms 6228 KB Output is correct
8 Correct 175 ms 7240 KB Output is correct
9 Correct 14 ms 8540 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 41 ms 4600 KB Output is correct
4 Correct 23 ms 4700 KB Output is correct
5 Correct 45 ms 4692 KB Output is correct
6 Correct 33 ms 5508 KB Output is correct
7 Correct 160 ms 6228 KB Output is correct
8 Correct 175 ms 7240 KB Output is correct
9 Correct 14 ms 8540 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 52 ms 4500 KB Output is correct
13 Correct 27 ms 4624 KB Output is correct
14 Correct 45 ms 4496 KB Output is correct
15 Correct 33 ms 5200 KB Output is correct
16 Correct 158 ms 6224 KB Output is correct
17 Correct 172 ms 7236 KB Output is correct
18 Correct 12 ms 8540 KB Output is correct
19 Execution timed out 1563 ms 43260 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 41 ms 4600 KB Output is correct
4 Correct 23 ms 4700 KB Output is correct
5 Correct 45 ms 4692 KB Output is correct
6 Correct 33 ms 5508 KB Output is correct
7 Correct 160 ms 6228 KB Output is correct
8 Correct 175 ms 7240 KB Output is correct
9 Correct 14 ms 8540 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 0 ms 604 KB Output is correct
12 Correct 41 ms 4456 KB Output is correct
13 Correct 22 ms 4492 KB Output is correct
14 Correct 52 ms 4672 KB Output is correct
15 Correct 34 ms 5204 KB Output is correct
16 Correct 164 ms 6224 KB Output is correct
17 Correct 175 ms 7084 KB Output is correct
18 Correct 12 ms 8540 KB Output is correct
19 Runtime error 26 ms 6100 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 27 ms 6072 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 1 ms 600 KB Output is correct
2 Runtime error 27 ms 6084 KB Execution killed with signal 11
3 Halted 0 ms 0 KB -