oj.uz

답안 #481018

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
481018 2021-10-19T08:09:46 Z blue Pinball (JOI14_pinball) C++17
100 / 100
 854 ms 90700 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
using namespace std;

const long long INF = 1'000'000'000'000'000'000LL;

struct segtree
{
    int l;
    int r;
    long long mn = INF;

    segtree* left = NULL;
    segtree* right = NULL;

    segtree()
    {
        ;
    }

    segtree(int L, int R)
    {
        l = L;
        r = R;
        if(l == r) return;
        int m = (l+r)/2;
        left = new segtree(l, m);
        right = new segtree(m+1, r);
    }

    void update(int I, long long V)
    {
        if(I < l || r < I) return;
        else if(l == r) mn = min(mn, V);
        else
        {
            left->update(I, V);
            right->update(I, V);
            mn = min(left->mn, right->mn);
        }
    }

    long long rangemin(int L, int R)
    {
        if(R < l || r < L) return INF;
        else if(L <= l && r <= R) return mn;
        else return min(left->rangemin(L, R), right->rangemin(L, R));
    }
};

long long op(long long q)
{
    if(q >= INF) q = -1;
    return q;
}

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

    int M, N;
    cin >> M >> N;

    set<int> vals;
    map<int, int> newvals;

    vector<int> A(1+M), B(1+M), C(1+M);
    vector<long long> D(1+M);
    for(int i = 1; i <= M; i++)
    {
        cin >> A[i] >> B[i] >> C[i] >> D[i];

        vals.insert(A[i]);
        vals.insert(B[i]);
        vals.insert(C[i]);
    }

    vals.insert(1);
    vals.insert(N);

    int ct = 0;
    for(int v: vals)
    {
        ct++;
        newvals[v] = ct;
    }

    for(int i = 1; i <= M; i++)
    {
        A[i] = newvals[A[i]];
        B[i] = newvals[B[i]];
        C[i] = newvals[C[i]];
    }
    N = newvals[N];

    // cerr << N << '\n';
    // for(int i = 1; i <= M; i++) cerr << A[i] << ' ' << B[i] << ' ' << C[i] << '\n';
    //
    // cerr << "\n\n";


    segtree lft(1, N), rgt(1, N);
    lft.update(1, 0);
    rgt.update(N, 0);

    long long ans = INF;

    // cerr << "i = " << 0 << '\n';
    // for(int j = 1; j <= N; j++) cerr << op(lft.rangemin(j, j)) << ' ';
    // cerr << '\n';
    // for(int j = 1; j <= N; j++) cerr << op(rgt.rangemin(j, j)) << ' ';
    // cerr << '\n';
    // cerr << "ans = " << ans << '\n';

    for(int i = 1; i <= M; i++)
    {
        // cerr << "\n\n";
        // cerr << "i = " << i << '\n';

        long long LV = lft.rangemin(A[i], N);
        long long RV = rgt.rangemin(1, B[i]);

        ans = min(ans, LV + RV + D[i]);

        // cerr << lft.rangemin(C[i], C[i]) << ' ' << rgt.rangemin(C[i], C[i]) << '\n';


        // cerr << LV << ' ' << RV << ' ' << D[i] << '\n';

        lft.update(C[i], D[i] + LV);
        rgt.update(C[i], D[i] + RV);

        // for(int j = 1; j <= N; j++) cerr << op(lft.rangemin(j, j)) << ' ';
        // cerr << '\n';
        // for(int j = 1; j <= N; j++) cerr << op(rgt.rangemin(j, j)) << ' ';
        // cerr << '\n';
        // cerr << "ans = " << ans << '\n';
    }

    if(ans >= INF) ans = -1;
    cout << ans << '\n';
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 460 KB Output is correct
17 Correct 3 ms 716 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 3 ms 1100 KB Output is correct
20 Correct 2 ms 580 KB Output is correct
21 Correct 2 ms 716 KB Output is correct
22 Correct 4 ms 1100 KB Output is correct
23 Correct 3 ms 1100 KB Output is correct
24 Correct 3 ms 1100 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 460 KB Output is correct
17 Correct 3 ms 716 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 3 ms 1100 KB Output is correct
20 Correct 2 ms 580 KB Output is correct
21 Correct 2 ms 716 KB Output is correct
22 Correct 4 ms 1100 KB Output is correct
23 Correct 3 ms 1100 KB Output is correct
24 Correct 3 ms 1100 KB Output is correct
25 Correct 33 ms 5616 KB Output is correct
26 Correct 117 ms 17348 KB Output is correct
27 Correct 340 ms 32800 KB Output is correct
28 Correct 135 ms 6584 KB Output is correct
29 Correct 257 ms 28868 KB Output is correct
30 Correct 234 ms 11080 KB Output is correct
31 Correct 611 ms 53380 KB Output is correct
32 Correct 521 ms 40132 KB Output is correct
33 Correct 76 ms 17892 KB Output is correct
34 Correct 322 ms 45356 KB Output is correct
35 Correct 408 ms 90436 KB Output is correct
36 Correct 854 ms 90700 KB Output is correct
37 Correct 690 ms 90616 KB Output is correct
38 Correct 626 ms 90528 KB Output is correct