Submission #1054955

#	Time	Username	Problem	Language	Result	Execution time	Memory
1054955		j_vdd16	Team Contest (JOI22_team)	C++17	55 / 100	2100 ms	15936 KiB

team

#include <algorithm>
#include <bitset>
#include <cstdint>
#include <cstring>
#include <iostream>
#include <limits.h>
#include <math.h>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

#define int long long
#define loop(X, N) for(int X = 0; X < (N); X++)
#define all(V) V.begin(), V.end()
#define rall(V) V.rbegin(), V.rend()

using namespace std;

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<bool> vb;
typedef vector<vector<bool>> vvb;


int getMax(int* data, int size) {
    bool isSame = false;
    int best = 0;
    for (int i = 1; i < size; i++) {
        if (data[i] > data[best]) {
            best = i;
            isSame = false;
        }
        else if (data[i] == data[best])
            isSame = true;
    }

    if (isSame) return -1;

    return best;
}

struct Beaver {
    int x = 0, y = 0, z = 0;

    bool operator<(const Beaver& b) const {
        return x > b.x || (x == b.x && y > b.y) || (x == b.x && y == b.y && z > b.z);
    }
    bool operator==(const Beaver& b) const {
        return x == b.x && y == b.y && z == b.z;
    }
};

bool compX(const Beaver& a, const Beaver& b) {
    return a.x > b.x;
}
bool compY(const Beaver& a, const Beaver& b) {
    return a.y > b.y || (a.y == b.y && a.z > b.z);
}

signed main() {
    int n;
    cin >> n;

    set<Beaver> beaverSet;
    vector<Beaver> beavers;
    loop(i, n) {
        int x, y, z;
        cin >> x >> y >> z;

        beaverSet.insert(Beaver{x, y, z});
    }

    for (auto beaver : beaverSet) beavers.push_back(beaver);
    n = (int)beavers.size();

    int bestScore = -1;
    int jStart = n - 1;

    set<ii, greater<ii>> beaversLeftList;
    for (int i = n - 1; i >= 0; i--) {
        const Beaver& beaver1 = beavers[i];

        int jStartPrev = jStart;
        jStart = min(jStart, n - 1);
        while (jStart >= i && beavers[jStart].x < beavers[i].x) 
            jStart--;

        jStart++;
        if (jStart >= n) continue;

        for (int j = jStart; j < jStartPrev; j++)
            beaversLeftList.insert({ beavers[j].y, beavers[j].z });
 
        vii beaversLeft;
        for (auto x : beaversLeftList) {
            beaversLeft.push_back(x);
        }
        int m = (int)beaversLeft.size();
 
        vi sufMaxZ(m + 1);
        for (int j = m - 1; j >= 0; j--)
            sufMaxZ[j] = max(sufMaxZ[j + 1], beaversLeft[j].second);
       
        int kStart = 1;
        for (int j = 0; j < m; j++) {
            if (beaversLeft[j].first <= beaver1.y) continue;
 
            while (kStart < m && beaversLeft[j].first <= beaversLeft[kStart].first) 
                kStart++;

            if (kStart == m) break;
            if (sufMaxZ[kStart] <= beaversLeft[j].second || sufMaxZ[kStart] <= beaver1.z) continue;
 
            int score = beaver1.x + beaversLeft[j].first + sufMaxZ[kStart];
            bestScore = max(score, bestScore);
        }
    }

    std::cout << bestScore << endl;

    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 29 / 29
• Subtask 3: 9 / 9
• Subtask 4: 9 / 9
• Subtask 5: 0 / 9
• Subtask 6: 0 / 9
• Subtask 7: 0 / 27