oj.uz

Submission #922170

# Submission time Handle Problem Language Result Execution time Memory
922170 2024-02-05T07:58:27 Z vjudge1 Lightning Rod (NOI18_lightningrod) C++17
76 / 100
 488 ms 262144 KB 
#include <bits/stdc++.h>
#include <iomanip>
#define ll long long
#define int long long
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define str string
#define pii pair<int,int>
#define sz(x) x.size()
#define all(x) x.begin(), x.end()
#define vi vector<int>
#define mii map<int,int>
#define mll map<ll,ll>
#define yes cout<<"YES\n";
#define no cout<<"NO\n";
#define yess cout<<"Yes\n";
#define noo cout<<"No\n";
using namespace std;

#define maxn 2000101
#define mod  1000000007

int gt(){
    int r=0;
    char c=getchar();
    //cout<<c<<"\n";
    while(c==' ' || c=='\n'){
        c=getchar();
      //  cout<<c<<"\n";
    }
    while(c!=' ' && c!='\n'){
        r*=10;
        r+=(c-'0');
        c=getchar();
        //cout<<c<<"\n";
    }
    //cout<<r<<"\n";
    return r;
}

void solve(){
    int n;
    n=gt();
    vector<pair<int,int>> v;
    for(int i=1;i<=n;i++){
        int q,w;
        q=gt();
        w=gt();
        if(v.size()==0){
            v.pb(mp(q,w));
            continue;
        }
        else{
            pair<int,int>p=v.back();
            if(abs(p.ff-q)<=p.ss-w){
                continue;
            }
            while(v.size()){
                pair<int,int>p=v.back();
                if(abs(p.ff-q)<=w-p.ss){
                    v.pop_back();
                }
                else{
                    break;
                }
            }
            v.pb(mp(q,w));
        }
    }
    cout<<v.size();
}

signed main(){
	//ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	//srand( time(0));
	//freopen("sum.in", "r", stdin);
	//freopen("sum.out", "w", stdout);
    int tests=1;
    //cin>>tests;
    for(int i=1;i<=tests;i++){
		//cout<<"Case "<<i<<": \n";
		solve();
	}
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 488 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 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 KB Output is correct

Subtask #3
12.0 / 12.0

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

Subtask #4
21.0 / 21.0

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

Subtask #5
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 344 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 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 12 ms 3860 KB Output is correct
15 Correct 12 ms 3624 KB Output is correct
16 Correct 13 ms 4812 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 437 ms 196496 KB Output is correct
2 Correct 463 ms 196396 KB Output is correct
3 Correct 417 ms 196344 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 488 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -