oj.uz

답안 #584599

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
584599 2022-06-27T15:35:59 Z drdilyor Pinball (JOI14_pinball) C++17
100 / 100
 436 ms 37564 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>
#ifdef ONPC
    #include "t_debug.cpp"
#else
    #define debug(...) 42
#endif
#define allit(a) (a).begin(), (a).end()
#define sz(a) ((int) (a).size())
#define cut(s) {cout << s << '\n'; return 0;}

using namespace std;
using ll = long long;
using vi = vector<int>;
namespace pd = __gnu_pbds;
template<typename K> using ordered_set = pd::tree<K, pd::null_type, less<K>, pd::rb_tree_tag, pd::tree_order_statistics_node_update>;
template<typename... T> using hash_table = pd::gp_hash_table<T...>;

const int RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count();
mt19937 rng(RANDOM);
const int INF = 1e9;
const ll INFL = 1e18;
const int N = 1000;
const int M = 10;

struct device {
    int left, right, center, cost;
};
ostream& operator <<(ostream& os, device& a) {
    return os << "{" << a.left << "," << a.right << ", " << a.center << " $" << a.cost << "}";
}

struct SegTree {
    int n;
    vector<ll> tree;
    SegTree(int n) : n(n), tree(2*n, INFL) {}
    void update(int i, ll v) {
        i += n;
        tree[i] = min(tree[i], v);
        for (i /= 2; i >= 1; i /= 2) tree[i] = min(tree[i*2], tree[i*2+1]);
    }
    ll query(int l, int r) {
        l += n;
        r += n;
        ll res = INFL;
        while (l <= r) {
            if (l % 2 == 1) res = min(res, tree[l++]);
            if (r % 2 == 0) res = min(res, tree[r--]);
            l /= 2; r /= 2;
        }
        return res;
    }
};

int nextPower2(int x) {
    x --;
    x |= x >> 1;
    x |= x >> 2;
    x |= x >> 4;
    x |= x >> 8;
    x |= x >> 16;
    return 1+x;
}

int solve() {
    int n, m;
    cin >> m >> n;
    vector<device> dev(m);

    for (int i = 0; i < m; i++) {
        cin >> dev[i].left >> dev[i].right >> dev[i].center >> dev[i].cost;
    }

    {
        //compress
        ordered_set<ll> values;
        for (int i = 0; i < m; i++) {
            values.insert(dev[i].left);
            values.insert(dev[i].right);
            values.insert(dev[i].center);
        }
        values.insert(1);
        values.insert(n);
        for (int i = 0; i < m; i++) {
            dev[i].left = values.order_of_key(dev[i].left);
            dev[i].right = values.order_of_key(dev[i].right);
            dev[i].center = values.order_of_key(dev[i].center);
        }
        n = values.order_of_key(n);
    }

    SegTree mnLeft(nextPower2(n+1)), mnRight(nextPower2(n+1));

    function<ll(int)> dpLeft = [&](int i) {
        ll res = INFL;
        if (dev[i].left == 0) res = (ll)dev[i].cost;
        else
            res = dev[i].cost + mnLeft.query(dev[i].left, dev[i].right);
        mnLeft.update(dev[i].center, res);
        return res;
    };

    function<ll(int)> dpRight = [&](int i) {
        ll res = INFL;
        if (dev[i].right == n) res = dev[i].cost;
        else
            res = dev[i].cost + mnRight.query(dev[i].left, dev[i].right);
        mnRight.update(dev[i].center, res);
        return res;
    };

    ll res = INFL;
    for (int i = 0; i < m; i++) {
        ll l = dpLeft(i), r = dpRight(i);
        if (l < INFL && r < INFL)
            res = min(res, l + r - dev[i].cost);
    }
    cout << (res >= INFL ? -1 : res);

    return 0;
}

signed main() {
    cin.tie(0)->sync_with_stdio(0);
    int t = 1;
    //cin >> t;
    while (t-- && cin) {
        if (solve()) break;
        #ifdef ONPC
            cout << "____________________" << endl;
        #endif
    }
    return 0;
}

Subtask #1
11.0 / 11.0

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

Subtask #2
18.0 / 18.0

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

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 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 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 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 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 3 ms 596 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 1 ms 464 KB Output is correct
22 Correct 2 ms 596 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 596 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 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 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 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 1 ms 340 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 3 ms 596 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 1 ms 464 KB Output is correct
22 Correct 2 ms 596 KB Output is correct
23 Correct 2 ms 468 KB Output is correct
24 Correct 2 ms 596 KB Output is correct
25 Correct 23 ms 2740 KB Output is correct
26 Correct 54 ms 5232 KB Output is correct
27 Correct 158 ms 12136 KB Output is correct
28 Correct 98 ms 2228 KB Output is correct
29 Correct 122 ms 9100 KB Output is correct
30 Correct 153 ms 4188 KB Output is correct
31 Correct 284 ms 20824 KB Output is correct
32 Correct 237 ms 11768 KB Output is correct
33 Correct 32 ms 5380 KB Output is correct
34 Correct 141 ms 18884 KB Output is correct
35 Correct 181 ms 20828 KB Output is correct
36 Correct 436 ms 37564 KB Output is correct
37 Correct 324 ms 37324 KB Output is correct
38 Correct 298 ms 37328 KB Output is correct