oj.uz

Submission #921607

# Submission time Handle Problem Language Result Execution time Memory
921607 2024-02-04T08:00:03 Z vjudge1 Lightning Rod (NOI18_lightningrod) C++17
7 / 100
 1032 ms 262148 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;

void solve(){
    ll a,ans=0;
    cin>>a;
    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});
    }
    ans=a;
    sort(v.begin(),v.end());
    reverse(v.begin(),v.end());
    for(ll i=0;i<v.size();i++){
        for(ll j=i+1;j<v.size();j++){
            if(mp[v[i]]==0){
                if(abs(v[i].second-v[j].second)<=v[i].first-v[j].first){
                    mp[v[j]]=1;
                    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:19:17: 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]
   19 |     for(ll i=0;i<v.size();i++){
      |                ~^~~~~~~~~
lightningrod.cpp:20:23: 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]
   20 |         for(ll j=i+1;j<v.size();j++){
      |                      ~^~~~~~~~~
lightningrod.cpp: In function 'int main()':
lightningrod.cpp:35:12: warning: unused variable 'i' [-Wunused-variable]
   35 |     ll t=1,i=1;
      |            ^

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 1032 ms 262148 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 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Incorrect 0 ms 344 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Incorrect 0 ms 344 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Incorrect 0 ms 344 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 985 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 1032 ms 262148 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -