oj.uz

Submission #692678

# Submission time Handle Problem Language Result Execution time Memory
692678 2023-02-02T04:13:59 Z zeroesandones Lightning Rod (NOI18_lightningrod) C++17
40 / 100
 2000 ms 262144 KB 
#include "bits/stdc++.h"
using namespace std;

typedef long long ll;
typedef long double ld;
typedef vector<ll> vi;
typedef pair<ll, ll> pi;

#define FOR(i, j, k) for (ll i = j; i < (ll) k; ++i)
#define FORD(i, j, k) for (ll i = j; i >= (ll) k; --i)
#define nl "\n"
#define sp " "

#define all(x) (x).begin(), (x).end()
#define sc second
#define fr first
#define pb emplace_back

void solve()
{
    ll n;
    cin >> n;

    ll x[n], y[n];
    FOR(i, 0, n) {
        cin >> x[i] >> y[i];
    }

    vector<array<ll, 3>> a(n);
    for(int i = 0; i < n; ++i) {
        a[i] = {x[i], y[i], i};
    }

    sort(all(a), [&](array<ll, 3> lhs, array<ll, 3> rhs) {
        return lhs[1] > rhs[1];
            });

    ll ans = 0;
    bool covered[n] = {};
    for(int i = 0; i < n; ++i) {
        if(covered[a[i][2]]) continue;
        covered[a[i][2]] = true;
        ++ans;
        for(int j = a[i][2] - 1; j >= 0; --j) {
            if(abs(a[i][0] - x[j]) <= a[i][1] - y[j]) {
                covered[j] = true;
            }
        }
        for(int j = a[i][2] + 1; j < n; ++j) {
            if(abs(a[i][0] - x[j]) <= a[i][1] - y[j]) {
                covered[j] = true;
            }
        }
    }

    cout << ans << nl;
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    ll t = 1;
    // cin >> t;
    while (t--)
    {
        solve();
    }
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Runtime error 1308 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 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 5 ms 340 KB Output is correct

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 5 ms 340 KB Output is correct
14 Correct 301 ms 11244 KB Output is correct
15 Correct 174 ms 11392 KB Output is correct
16 Execution timed out 2076 ms 10332 KB Time limit exceeded
17 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1387 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 1308 ms 262144 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -