oj.uz

답안 #1035089

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1035089 2024-07-26T04:12:59 Z vjudge1 Pinball (JOI14_pinball) C++17
100 / 100
 171 ms 30164 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] = min(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());
        bool b = 0, c = 0;
        for (int i = 1; i <= m; i++) {
            if (a[i].a == 1) {
                b = 1;
                p[i] = a[i].d;
            }
            if (a[i].b == n) {
                c = 1;
                q[i] = a[i].d;
            }
            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;
        }
        if (b + c < 2) {
            cout << -1;
            return;
        }
        n = v.size();
        L.n = n;
        R.n = n;
        L.build();
        R.build();
        for (int i = 1; i <= m; i++) {
            if (!p[i]) {
                p[i] = inf;
            }
            if (!q[i]) {
                q[i] = inf;
            }
        }
        for (int i = 1; i <= m; i++) {
            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++) {
//            cout << i << ": " << p[i] << " " << q[i] << '\n';
            ans = min(ans, p[i] + q[i] - a[i].d);
        }
        if (ans == inf) {
            cout << -1;
        }
        else {
            cout << ans;
        }
    }
}

int main() {
//    freopen("PINBALL.INP", "r", stdin);
//    freopen("PINBALL.OUT", "w", stdout);
    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 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 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 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 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 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 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 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 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 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 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 3 ms 348 KB Output is correct
18 Correct 3 ms 480 KB Output is correct
19 Correct 3 ms 344 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 348 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 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 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 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 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 3 ms 348 KB Output is correct
18 Correct 3 ms 480 KB Output is correct
19 Correct 3 ms 344 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 348 KB Output is correct
25 Correct 14 ms 2528 KB Output is correct
26 Correct 35 ms 6716 KB Output is correct
27 Correct 105 ms 14380 KB Output is correct
28 Correct 98 ms 11576 KB Output is correct
29 Correct 75 ms 11724 KB Output is correct
30 Correct 118 ms 12680 KB Output is correct
31 Correct 162 ms 22012 KB Output is correct
32 Correct 161 ms 18876 KB Output is correct
33 Correct 20 ms 6364 KB Output is correct
34 Correct 77 ms 15308 KB Output is correct
35 Correct 127 ms 30144 KB Output is correct
36 Correct 171 ms 30164 KB Output is correct
37 Correct 151 ms 30140 KB Output is correct
38 Correct 147 ms 30144 KB Output is correct