oj.uz

답안 #781861

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
781861 2023-07-13T12:05:54 Z TeaTime Two Dishes (JOI19_dishes) C++17
0 / 100
 387 ms 92156 KB 
#include <iostream>
#include <vector>
#include <set>
#include <algorithm>
#include <cmath>
#include <cassert>

using namespace std;

typedef long long ll;
typedef long double ld;

#define fastInp cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);

const ll SZ = 1'000'100, INF = 2'000'000'000'000'000'000;

#define int ll

ll n, m;

struct el {
    ll a, s, p;
};

vector<el> vec1, vec2;
vector<ll> pref1, pref2;

struct point {
    ll x, y, val;
};

vector<point> blue, red;

ll seg[SZ * 8], psh[SZ * 8];

void push(int v) {
    seg[v * 2 + 1] += psh[v];
    seg[v * 2 + 2] += psh[v];

    psh[v * 2 + 1] += psh[v];
    psh[v * 2 + 2] += psh[v];

    psh[v] = 0;
}

void upd(int v, int l, int r, int askl, int askr, ll val) {
    push(v);
    if (l >= askr || r <= askl) return;

    if (askl <= l && r <= askr) {
        seg[v] += val;
        psh[v] += val;
        return;
    }

    int mid = (l + r) / 2;
    upd(v * 2 + 1, l, mid, askl, askr, val);
    upd(v * 2 + 2, mid, r, askl, askr, val);
    seg[v] = max(seg[v * 2 + 1], seg[v * 2 + 2]);
}

void upd(int v, int l, int r, int pos, ll val) {
    push(v);
    if (l == r - 1) {
        seg[v] = val;
    } else {
        int mid = (l + r) / 2;

        if (pos < mid) {
            upd(v * 2 + 1, l, mid, pos, val);
        } else {
            upd(v * 2 + 2, mid, r, pos, val);
        }

        seg[v] = max(seg[v * 2 + 1], seg[v * 2 + 2]);
    }
}

ll ask(int v, int l, int r, int askl, int askr) {
    push(v);
    if (l >= askr || r <= askl) return -INF;

    if (askl <= l && r <= askr) return seg[v];

    int mid = (l + r) / 2;
    return max(ask(v * 2 + 1, l, mid, askl, askr), ask(v * 2 + 2, mid, r, askl, askr));
}

vector<point> points[SZ];

bool cmp(point a, point b) {
    return a.y < b.y;
}

signed main() {
    fastInp;

    cin >> n >> m;

    vec1.resize(n);
    vec2.resize(m);

    pref1.push_back(0);
    for (auto &c : vec1) {
        cin >> c.a >> c.s >> c.p;
        pref1.push_back(pref1.back() + c.a);
    }

    pref2.push_back(0);
    for (auto &c : vec2) {
        cin >> c.a >> c.s >> c.p;
        pref2.push_back(pref2.back() + c.a);
    }

    for (int i = 0; i < SZ; i++) {
        seg[i] = -INF;
    }

    upd(0, 0, SZ, 0, 0);

    // x is vec1
    // y is vec2
    ll ans = 0, prefsum = 0;
    for (int i = 0; i < n; i++) {
        prefsum += vec1[i].a;

        ll left = vec1[i].s - prefsum;
        if (left < 0) continue;

        int ind = upper_bound(pref2.begin(), pref2.end(), left) - pref2.begin() - 1;
        assert(ind >= 0);

        blue.push_back({i + 1, ind, vec1[i].p}); // above or on the lattice path
    }

    prefsum = 0;

    for (int i = 0; i < m; i++) {
        prefsum += vec2[i].a;

        ll left = vec2[i].s - prefsum;
        if (left < 0) continue;

        int ind = upper_bound(pref1.begin(), pref1.end(), left) - pref1.begin() - 1;
        assert(ind >= 0);

        red.push_back({ind, i + 1, vec2[i].p}); // under or on the lattice path
        blue.push_back({ind + 1, i, -vec2[i].p}); // above or on the lattice path
        ans += vec2[i].p;
    }

    for (auto c : blue) {
        points[c.x].push_back(c);
        if (c.x != 0) points[c.x - 1].push_back({c.x - 1, c.y + 1, 0});
    }

    for (int i = 0; i < SZ; i++) {
        sort(points[i].begin(), points[i].end(), cmp);

        vector<point> cur;
        for (auto c : points[i]) {
            if (!cur.empty() && cur.back().y == c.y) {
                cur.back().val += c.val;
            } else {
                cur.push_back(c);
            }
        }

        points[i] = cur;

        for (auto c : points[i]) {
            upd(0, 0, SZ, 0, c.y + 1, c.val);
            ll q = ask(0, 0, SZ, 0, c.y + 1);
            upd(0, 0, SZ, c.y, q);
        }
    }

    cout << ans + ask(0, 0, SZ, m - 1, m + 1);

    return 0;
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 387 ms 92156 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 31700 KB Output is correct
2 Incorrect 18 ms 31592 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 31700 KB Output is correct
2 Incorrect 18 ms 31592 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 39.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 31700 KB Output is correct
2 Incorrect 18 ms 31592 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 31700 KB Output is correct
2 Incorrect 18 ms 31592 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 31700 KB Output is correct
2 Incorrect 18 ms 31592 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 387 ms 92156 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 387 ms 92156 KB Output isn't correct
2 Halted 0 ms 0 KB -