Submission #882312

#	Time	Username	Problem	Language	Result	Execution time	Memory
882312		noompty	Pinball (JOI14_pinball)	C++17	100 / 100	674 ms	93448 KiB

pinball

#include <iostream>
#include <vector>
#include <tuple>
#include <queue>
#include <stack>
#include <deque>
#include <set>
#include <map>
#include <cmath>
#include <array>
#include <random>
#include <string>
#include <cassert>
#include <climits>
#include <algorithm>
#include <unordered_set>
#include <unordered_map>
using namespace std;
 
#define ll long long
#define f first
#define s second
 
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
 
template<typename A> void __print(const A &x);
template<typename A, typename B> void __print(const pair<A, B> &p);
template<typename... A> void __print(const tuple<A...> &t);
template<typename T> void __print(stack<T> s);
template<typename T> void __print(queue<T> q);
template<typename T, typename... U> void __print(priority_queue<T, U...> q);
 
template<typename A> void __print(const A &x) {
    bool first = true;
    cerr << '{';
    for (const auto &i : x) {
        cerr << (first ? "" : ","), __print(i);
        first = false;
    }
    cerr << '}';
}
 
template<typename A, typename B> void __print(const pair<A, B> &p) {
    cerr << '(';
    __print(p.f);
    cerr << ',';
    __print(p.s);
    cerr << ')';
}
 
template<typename... A> void __print(const tuple<A...> &t) {
    bool first = true;
    cerr << '(';
    apply([&first] (const auto &...args) { ((cerr << (first ? "" : ","), __print(args), first = false), ...); }, t);
    cerr << ')';
}
 
template<typename T> void __print(stack<T> s) {
    vector<T> debugVector;
    while (!s.empty()) {
        T t = s.top();
        debugVector.push_back(t);
        s.pop();
    }
    reverse(debugVector.begin(), debugVector.end());
    __print(debugVector);
}
 
template<typename T> void __print(queue<T> q) {
    vector<T> debugVector;
    while (!q.empty()) {
        T t = q.front();
        debugVector.push_back(t);
        q.pop();
    }
    __print(debugVector);
}
 
template<typename T, typename... U> void __print(priority_queue<T, U...> q) {
    vector<T> debugVector;
    while (!q.empty()) {
        T t = q.top();
        debugVector.push_back(t);
        q.pop();
    }
    __print(debugVector);
}
 
void _print() { cerr << "]\n"; }
 
template <typename Head, typename... Tail> void _print(const Head &H, const Tail &...T) {
    __print(H);
    if (sizeof...(T)) cerr << ", ";
    _print(T...);
}
 
#ifdef DEBUG
	#define D(...) cerr << "Line: " << __LINE__ << " [" << #__VA_ARGS__ << "] = ["; _print(__VA_ARGS__)
#else
	#define D(...)
#endif

struct Node {
    int l, r;
    ll mn;
    Node *lft, *rht;
    Node (int tl, int tr): l(tl), r(tr), mn(1e18) {
        if (l + 1 != r) {
            lft = new Node(l, (l + r) / 2);
            rht = new Node((l + r) / 2, r);
        } else {
            lft = rht = NULL;
        }
    }
};

void update(Node *x, int pos, ll val) {
    if (pos < x->l || x->r <= pos) {
        return;
    }
    if (x->l + 1 == x->r) {
        x->mn = min(x->mn, val);
        return;
    }
    update(x->lft, pos, val);
    update(x->rht, pos, val);
    x->mn = min(x->lft->mn, x->rht->mn);
}

ll query(Node *x, int l, int r) {
    if (r <= x->l || x->r <= l) {
        return 1e18;
    }
    if (l <= x->l && x->r <= r) {
        return x->mn;
    }
    return min(query(x->lft, l, r), query(x->rht, l, r));
}

int n, m, idx;
ll ans;
set<int> coords;
map<int, int> mp;
vector<array<int, 4>> otiles, tiles;
Node *rootl, *rootr;

int main() {

    ios_base::sync_with_stdio(false);
    cin.tie(0);

    cin >> m >> n;
    for (int i = 0, a, b, c, d; i < m; i++) {
        cin >> a >> b >> c >> d;
        coords.insert(a);
        coords.insert(b);
        coords.insert(c);
        otiles.push_back({a, b, c, d});
    }
    coords.insert(1);
    coords.insert(n);

    for (int i : coords) {
        mp[i] = idx++;
    }

    rootl = new Node(0, idx);
    rootr = new Node(0, idx);
    for (int i = 0; i < m; i++) {
        tiles.push_back({mp[otiles[i][0]], mp[otiles[i][1]], mp[otiles[i][2]], otiles[i][3]});
    }

    ans = 1e18;
    for (int i = 0; i < m; i++) {
        ll lft = (!tiles[i][0] ? 0 : query(rootl, tiles[i][0], tiles[i][1] + 1)) + tiles[i][3];
        ll rht = (tiles[i][1] == idx - 1 ? 0 : query(rootr, tiles[i][0], tiles[i][1] + 1)) + tiles[i][3];
        update(rootl, tiles[i][2], lft);
        update(rootr, tiles[i][2], rht);
        ans = min(ans, lft + rht - tiles[i][3]);
    }

    cout << (ans == 1e18 ? -1 : ans) << "\n";

}

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