Submission #1034745

#	Time	Username	Problem	Language	Result	Execution time	Memory
1034745		vjudge1	Pinball (JOI14_pinball)	C++17	51 / 100	3 ms	860 KiB

pinball

#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 = 1e5 + 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 {
//    bool
//}

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;
}
/*
*/

• Subtask 1: 11 / 11
• Subtask 2: 18 / 18
• Subtask 3: 22 / 22
• Subtask 4: 0 / 49