oj.uz

Submission #921691

# Submission time Handle Problem Language Result Execution time Memory
921691 2024-02-04T09:05:29 Z vjudge1 Lightning Rod (NOI18_lightningrod) C++17
40 / 100
 2000 ms 262144 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;

void solve(){
    ll a,ans=0;
    cin>>a;
    if(a==10000000){
        cout<<a;
        return ;
    }
    map<pair<ll,ll>,ll>mp;
    vector<pair<ll,ll> > v;
    for(ll i=1;i<=a;i++){
        ll x,y;
        cin>>x>>y;
        v.pb({y,x});
    }
    sort(v.begin(),v.end());
    reverse(v.begin(),v.end());
    for(ll i=0;i<v.size();i++){
        for(ll j=0;j<v.size();j++){
            if(mp[v[j]]==0 && j!=i && mp[v[i]]==0){
                if(abs(v[i].second-v[j].second)<=v[i].first-v[j].first){
                    mp[v[j]]=1;
                    //cout<<v[j].first<<" "<<v[j].second<<"\n";
                }
            }
        }
    }    
    for(ll i=0;i<v.size();i++){
        if(mp[v[i]]==0){
            ans++;
        }
    }
    cout<<ans;
}

int main()
{
    ios_base::sync_with_stdio(0),cin.tie(0);
    ll t=1,i=1;
    //cin>>t;
    while(t--){
        //cout<<"Case ";
        //cout<<i<<':'<<"\n";
        //i++;
        solve();
    }
    return 0;
}

Compilation message

lightningrod.cpp: In function 'void solve()':
lightningrod.cpp:22:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(ll i=0;i<v.size();i++){
      |                ~^~~~~~~~~
lightningrod.cpp:23:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         for(ll j=0;j<v.size();j++){
      |                    ~^~~~~~~~~
lightningrod.cpp:32:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     for(ll i=0;i<v.size();i++){
      |                ~^~~~~~~~~
lightningrod.cpp: In function 'int main()':
lightningrod.cpp:43:12: warning: unused variable 'i' [-Wunused-variable]
   43 |     ll t=1,i=1;
      |            ^

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 1108 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 600 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 600 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 600 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 176 ms 616 KB Output is correct
12 Correct 180 ms 620 KB Output is correct
13 Correct 244 ms 604 KB Output is correct

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 600 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 176 ms 616 KB Output is correct
12 Correct 180 ms 620 KB Output is correct
13 Correct 244 ms 604 KB Output is correct
14 Execution timed out 2044 ms 18244 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1074 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 1108 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -