oj.uz

답안 #567804

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
567804 2022-05-24T08:32:13 Z hoanghq2004 Team Contest (JOI22_team) C++14
0 / 100
 288 ms 39360 KB 
#include <bits/stdc++.h>
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace __gnu_pbds;
using namespace std;

template <typename T>
using ordered_set = tree <T, null_type, less <T>, rb_tree_tag, tree_order_statistics_node_update>;

const int N = 15e4 + 10;

int n;

struct dta {
    int x, y, z;
    int operator < (const dta& other) const {
        return z > other.z;
    }
} A[N];

struct SegmentTree {
    int st[N * 4];
    SegmentTree() {
        memset(st, -1, sizeof(st));
    }
    void reset() {
        memset(st, -1, sizeof(st));
    }
    void add(int id, int L, int R, int i, int val) {
        if (L == R) {
            st[id] = val;
            return;
        }
        int mid = L + R >> 1;
        if (i <= mid) add(id * 2, L, mid, i, val);
        else add(id * 2 + 1, mid + 1, R, i, val);
        st[id] = max(st[id * 2], st[id * 2 + 1]);
    }
    int get(int id, int L, int R, int k) {
        if (st[id] <= k) return -1;
        if (L == R) return L;
        int mid = L + R >> 1;
        int ans = get(id * 2, L, mid, k);
        if (ans == -1) ans = get(id * 2 + 1, mid + 1, R, k);
        return ans;
    }
} ST[2];

struct RangeTree {
    vector <int> BIT[N];
    vector <int> dta[N];
    void fake_add(int x, int y) {
        ++x, ++y;
        for (; x < N; x += x & - x)
            dta[x].push_back(y);
    }
    void build() {
        for (int i = 0; i < N; ++i) sort(dta[i].begin(), dta[i].end()), BIT[i].assign(dta[i].size() + 10, 1e9);
    }
    void add(int x, int y, int w) {
        ++x, ++y;
        for (; x < N; x += x & - x) {
            int z = lower_bound(dta[x].begin(), dta[x].end(), y) - dta[x].begin() + 1;
            for (; z < BIT[x].size(); z += z & - z)
                BIT[x][z] = min(BIT[x][z], w);
        }
    }
    int get(int x, int y) {
        ++x, ++y;
        int ans = 1e9;
        for (; x; x -= x & - x) {
            int z = upper_bound(dta[x].begin(), dta[x].end(), y) - dta[x].begin();
            for (; z; z -= z & - z)
                ans = min(ans, BIT[x][z]);
        }
        return ans;
    }
} T;

int main() {
    ios :: sync_with_stdio(0); cin.tie(0);
    vector <int> X, Y;
    cin >> n;
    for (int i = 0; i < n; ++i) {
        cin >> A[i].x >> A[i].y >> A[i].z;
        A[i].x = - A[i].x, A[i].y = - A[i].y, A[i].z = - A[i].z;
    }
    for (int i = 0; i < n; ++i) X.push_back(A[i].x), Y.push_back(A[i].y);
    sort(A, A + n);
    sort(X.begin(), X.end());
    sort(Y.begin(), Y.end());
    for (int i = 0; i < n; ++i) {
        A[i].x = lower_bound(X.begin(), X.end(), A[i].x) - X.begin();
        A[i].y = lower_bound(Y.begin(), Y.end(), A[i].y) - Y.begin();
    }
    for (int i = 0; i < n; ++i) {
        int x = ST[0].get(1, 0, X.size() - 1, A[i].y);
        int y = ST[1].get(1, 0, Y.size() - 1, A[i].x);
        if (x != -1 && x < A[i].x) T.fake_add(x, A[i].y);
        if (y != -1 && y < A[i].y) T.fake_add(A[i].x, y);
        ST[0].add(1, 0, X.size() - 1, A[i].x, A[i].y);
        ST[1].add(1, 0, Y.size() - 1, A[i].y, A[i].x);
    }
    ST[0].reset(), ST[1].reset();
    T.build();
    int ans = 1e9;
    for (int i = 0; i < n;) {
        int j = i;
        while (j < n && A[i].z == A[j].z) ++j;
        for (int k = i; k < j; ++k) ans = min(ans, A[k].z + T.get(A[k].x, A[k].y));
        for (int k = i; k < j; ++k) {
            int x = ST[0].get(1, 0, X.size() - 1, A[k].y);
            int y = ST[1].get(1, 0, Y.size() - 1, A[k].x);
            if (x != -1 && x < A[k].x) T.add(x, A[k].y, X[x] + Y[A[k].y]);
            if (y != -1 && y < A[k].y) T.add(A[k].x, y, X[A[k].x] + Y[y]);
            ST[0].add(1, 0, X.size() - 1, A[k].x, A[k].y);
            ST[1].add(1, 0, Y.size() - 1, A[k].y, A[k].x);
        }
        i = j;
    }
    if (ans > 0) ans = 1;
    cout << - ans;
}

Compilation message

team.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization ("O3")
      | 
team.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    3 | #pragma GCC optimization ("unroll-loops")
      | 
team.cpp: In member function 'void SegmentTree::add(int, int, int, int, int)':
team.cpp:37:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   37 |         int mid = L + R >> 1;
      |                   ~~^~~
team.cpp: In member function 'int SegmentTree::get(int, int, int, int)':
team.cpp:45:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   45 |         int mid = L + R >> 1;
      |                   ~~^~~
team.cpp: In member function 'void RangeTree::add(int, int, int)':
team.cpp:67:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |             for (; z < BIT[x].size(); z += z & - z)
      |                    ~~^~~~~~~~~~~~~~~

Subtask #1
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 19028 KB Output is correct
2 Correct 14 ms 19108 KB Output is correct
3 Correct 14 ms 19012 KB Output is correct
4 Correct 13 ms 19028 KB Output is correct
5 Correct 15 ms 19028 KB Output is correct
6 Correct 14 ms 19028 KB Output is correct
7 Correct 14 ms 19028 KB Output is correct
8 Correct 19 ms 19060 KB Output is correct
9 Correct 15 ms 19116 KB Output is correct
10 Correct 19 ms 19020 KB Output is correct
11 Correct 15 ms 19040 KB Output is correct
12 Correct 17 ms 19084 KB Output is correct
13 Correct 15 ms 19100 KB Output is correct
14 Correct 15 ms 19156 KB Output is correct
15 Incorrect 14 ms 19124 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #2
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 19028 KB Output is correct
2 Correct 14 ms 19108 KB Output is correct
3 Correct 14 ms 19012 KB Output is correct
4 Correct 13 ms 19028 KB Output is correct
5 Correct 15 ms 19028 KB Output is correct
6 Correct 14 ms 19028 KB Output is correct
7 Correct 14 ms 19028 KB Output is correct
8 Correct 19 ms 19060 KB Output is correct
9 Correct 15 ms 19116 KB Output is correct
10 Correct 19 ms 19020 KB Output is correct
11 Correct 15 ms 19040 KB Output is correct
12 Correct 17 ms 19084 KB Output is correct
13 Correct 15 ms 19100 KB Output is correct
14 Correct 15 ms 19156 KB Output is correct
15 Incorrect 14 ms 19124 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 19020 KB Output is correct
2 Correct 14 ms 19116 KB Output is correct
3 Correct 14 ms 19000 KB Output is correct
4 Correct 15 ms 19116 KB Output is correct
5 Correct 14 ms 19028 KB Output is correct
6 Correct 18 ms 19096 KB Output is correct
7 Correct 19 ms 19068 KB Output is correct
8 Correct 17 ms 19096 KB Output is correct
9 Correct 15 ms 19028 KB Output is correct
10 Correct 14 ms 19028 KB Output is correct
11 Correct 288 ms 39360 KB Output is correct
12 Incorrect 123 ms 26736 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #4
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 19020 KB Output is correct
2 Correct 14 ms 19116 KB Output is correct
3 Correct 14 ms 19000 KB Output is correct
4 Correct 15 ms 19116 KB Output is correct
5 Correct 14 ms 19028 KB Output is correct
6 Correct 18 ms 19096 KB Output is correct
7 Correct 19 ms 19068 KB Output is correct
8 Correct 17 ms 19096 KB Output is correct
9 Correct 15 ms 19028 KB Output is correct
10 Correct 14 ms 19028 KB Output is correct
11 Correct 288 ms 39360 KB Output is correct
12 Incorrect 123 ms 26736 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 19020 KB Output is correct
2 Correct 14 ms 19116 KB Output is correct
3 Correct 14 ms 19000 KB Output is correct
4 Correct 15 ms 19116 KB Output is correct
5 Correct 14 ms 19028 KB Output is correct
6 Correct 18 ms 19096 KB Output is correct
7 Correct 19 ms 19068 KB Output is correct
8 Correct 17 ms 19096 KB Output is correct
9 Correct 15 ms 19028 KB Output is correct
10 Correct 14 ms 19028 KB Output is correct
11 Correct 288 ms 39360 KB Output is correct
12 Incorrect 123 ms 26736 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 19020 KB Output is correct
2 Correct 14 ms 19116 KB Output is correct
3 Correct 14 ms 19000 KB Output is correct
4 Correct 15 ms 19116 KB Output is correct
5 Correct 14 ms 19028 KB Output is correct
6 Correct 18 ms 19096 KB Output is correct
7 Correct 19 ms 19068 KB Output is correct
8 Correct 17 ms 19096 KB Output is correct
9 Correct 15 ms 19028 KB Output is correct
10 Correct 14 ms 19028 KB Output is correct
11 Correct 288 ms 39360 KB Output is correct
12 Incorrect 123 ms 26736 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 19028 KB Output is correct
2 Correct 14 ms 19108 KB Output is correct
3 Correct 14 ms 19012 KB Output is correct
4 Correct 13 ms 19028 KB Output is correct
5 Correct 15 ms 19028 KB Output is correct
6 Correct 14 ms 19028 KB Output is correct
7 Correct 14 ms 19028 KB Output is correct
8 Correct 19 ms 19060 KB Output is correct
9 Correct 15 ms 19116 KB Output is correct
10 Correct 19 ms 19020 KB Output is correct
11 Correct 15 ms 19040 KB Output is correct
12 Correct 17 ms 19084 KB Output is correct
13 Correct 15 ms 19100 KB Output is correct
14 Correct 15 ms 19156 KB Output is correct
15 Incorrect 14 ms 19124 KB Output isn't correct
16 Halted 0 ms 0 KB -