oj.uz

답안 #1034824

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1034824 2024-07-25T19:14:10 Z vjudge1 Pinball (JOI14_pinball) C++17
51 / 100
 97 ms 14280 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = long long;

#define fi first
#define se second
#define pb push_back
#define ep emplace_back
#define lwb lower_bound
#define upb upper_bound
#define gcd(x, y) __gcd(x, y)
#define lcm(x, y) x * y / __gcd(x, y)

const int mod = 1e9 + 7;
const ll inf = 1e18;
const int mxN = 1e6 + 5;
const int block = 450;
const int base = 311;
const int LOG = 19;

struct pinball {
    ll a, b, c, d;
} a[mxN];

int m, n;

namespace sub3 {
    bool check() {
        return m <= 1000;
    }

    ll L[mxN], R[mxN];

    void solve() {
        for (int i = 1; i <= m; i++) {
            L[i] = inf;
            R[i] = inf;
        }
        for (int i = 1; i <= m; i++) {
            if (a[i].a == 1) {
                L[i] = a[i].d;
            }
            if (a[i].b == n) {
                R[i] = a[i].d;
            }
            for (int j = 1; j < i; j++) {
                if (a[j].a < a[i].a && a[i].a <= a[j].c && a[j].c <= a[i].b) {
                    L[i] = min(L[i], L[j] + a[i].d);
                }
                if (a[j].b > a[i].b && a[i].a <= a[j].c && a[j].c <= a[i].b) {
                    R[i] = min(R[i], R[j] + a[i].d);
                }
            }
        }
        ll ans = inf;
        for (int i = 1; i <= m; i++) {
            ans = min(ans, L[i] + R[i] - a[i].d);
        }
        if (ans == inf) {
            cout << -1;
        }
        else {
            cout << ans;
        }
    }
}

namespace sub4 {
    struct SegTree {
        int n;
        ll st[4 * mxN];

        void build() {
            for (int i = 1; i <= 4 * n; i++) {
                st[i] = inf;
            }
        }

        void update(int i, int l, int r, int p, ll val) {
            if (p < l || p > r) {
                return;
            }
            if (l == r) {
                st[i] = val;
                return;
            }
            int m = (l + r) / 2;
            update(i * 2, l, m, p, val);
            update(i * 2 + 1, m + 1, r, p, val);
            st[i] = min(st[i * 2], st[i * 2 + 1]);
        }

        ll get(int i, int l, int r, int u, int v) {
            if (v < l || u > r) {
                return inf;
            }
            if (u <= l && r <= v) {
                return st[i];
            }
            int m = (l + r) / 2;
            return min(get(i * 2, l, m, u, v), get(i * 2 + 1, m + 1, r, u, v));
        }
    } L, R;

    ll p[mxN], q[mxN];
    vector<ll> v;

    void solve() {
        for (int i = 1; i <= m; i++) {
            v.pb(a[i].a);
            v.pb(a[i].b);
            v.pb(a[i].c);
        }
        v.pb(n);
        sort(v.begin(), v.end());
        v.resize(unique(v.begin(), v.end()) - v.begin());
        n = lwb(v.begin(), v.end(), n) - v.begin() + 1;
        for (int i = 1; i <= m; i++) {
            a[i].a = lwb(v.begin(), v.end(), a[i].a) - v.begin() + 1;
            a[i].b = lwb(v.begin(), v.end(), a[i].b) - v.begin() + 1;
            a[i].c = lwb(v.begin(), v.end(), a[i].c) - v.begin() + 1;
        }
        L.n = n;
        R.n = n;
        L.build();
        R.build();
        for (int i = 1; i <= m; i++) {
            p[i] = inf;
            q[i] = inf;
        }
        for (int i = 1; i <= m; i++) {
            if (a[i].a == 1) {
                p[i] = a[i].d;
            }
            if (a[i].b == n) {
                q[i] = a[i].d;
            }
            ll x = L.get(1, 1, n, a[i].a, a[i].b);
            ll y = R.get(1, 1, n, a[i].a, a[i].b);
            p[i] = min(p[i], x + a[i].d);
            q[i] = min(q[i], y + a[i].d);
            L.update(1, 1, n, a[i].c, p[i]);
            R.update(1, 1, n, a[i].c, q[i]);
        }
//        for (int i = 1; i <= m; i++) {
//            cout << p[i] << " ";
//        }
//        cout << '\n';
//        for (int i = 1; i <= m; i++) {
//            cout << p[i] << " ";
//        }
        ll ans = inf;
        for (int i = 1; i <= m; i++) {
            ans = min(ans, p[i] + q[i] - a[i].d);
        }
        if (ans == inf) {
            cout << -1;
        }
        else {
            cout << ans;
        }
    }
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> m >> n;
    for (int i = 1; i <= m; i++) {
        cin >> a[i].a >> a[i].b >> a[i].c >> a[i].d;
    }
    if (sub3::check()) return sub3::solve(), 0;
    sub4::solve();
}
/*
*/

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 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 348 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 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 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 348 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 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 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 348 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 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 3 ms 524 KB Output is correct
18 Correct 3 ms 472 KB Output is correct
19 Correct 3 ms 348 KB Output is correct
20 Correct 3 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 524 KB Output is correct

Subtask #4
0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 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 348 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 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 3 ms 524 KB Output is correct
18 Correct 3 ms 472 KB Output is correct
19 Correct 3 ms 348 KB Output is correct
20 Correct 3 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 2 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 524 KB Output is correct
25 Correct 12 ms 2528 KB Output is correct
26 Correct 34 ms 6616 KB Output is correct
27 Correct 97 ms 14280 KB Output is correct
28 Incorrect 85 ms 11576 KB Output isn't correct
29 Halted 0 ms 0 KB -