답안 #692706

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
692706	2023-02-02T04:39:56 Z	zeroesandones	Lightning Rod (NOI18_lightningrod)	C++17	76 / 100	1399 ms	262144 KB

lightningrod

#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];
    }

    stack<pi> s;
    for(int i = 0; i < n; ++i) {
        bool add = true;
        while(!s.empty()) {
            auto [nx, ny] = s.top();
            if(abs(nx - x[i]) <= ny - y[i]) {
                add = false;
                break;
            } else if(abs(nx - x[i]) <= y[i] - ny) {
                s.pop();
            } else {
                break;
            }
        }
        if(add)
            s.push({x[i], y[i]});
    }

    cout << s.size() << 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

#	결과	실행 시간	메모리	Grader output
1	Runtime error	1326 ms	262144 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	232 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

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	232 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	1 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct

Subtask #4

21.0 / 21.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	232 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	1 ms	212 KB	Output is correct
9	Correct	0 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	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct

Subtask #5

26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	232 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	1 ms	212 KB	Output is correct
9	Correct	0 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	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	34 ms	3256 KB	Output is correct
15	Correct	37 ms	3412 KB	Output is correct
16	Correct	34 ms	4584 KB	Output is correct

Subtask #6

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1363 ms	258316 KB	Output is correct
2	Correct	1399 ms	262144 KB	Output is correct
3	Correct	1380 ms	262144 KB	Output is correct

Subtask #7

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Runtime error	1326 ms	262144 KB	Execution killed with signal 9
2	Halted	0 ms	0 KB	-