oj.uz

Submission #796635

# Submission time Handle Problem Language Result Execution time Memory
796635 2023-07-28T15:02:21 Z SlavicG Minerals (JOI19_minerals) C++17
90 / 100
 78 ms 6840 KB 
#include <bits/stdc++.h>
#include "minerals.h"
using namespace std;
 
#define sz(a) (int)a.size()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
//b - valoarea elementului, stateul (aprins/stins)
int ans = 0, prevans = -1;
map<int, int> paired;
void rec(vector<int> a, vector<pair<int, int>> b) {
    if(b.empty() || a.empty()) return;
    if(sz(b) == 1) {
        for(auto x: a) Answer(x, b[0].first), paired[b[0].first] = 1;
        return;
    }
    int mid = sz(b) / 2;
    vector<pair<int, int>> left, right;
    for(int i = 0; i < sz(b); ++i) {
        if(i < mid) left.push_back(b[i]);
        else right.push_back(b[i]);
    }

    {
        int change1 = 0, change2 = 0;
        for(auto& x: left) {
            if(!x.second) {
                ++change1;
            } else {
                ++change2;
            }
        }
        for(auto& x: right) {
            if(x.second) {
                ++change1;
            } else {
                ++change2;
            }
        }
        if(change2 < change1) swap(left, right);
    }

    for(auto& x: left) {
        if(!x.second) {
            prevans = Query(x.first);
            x.second = 1;
        }
    }
    for(auto& x: right) {
        if(x.second) {
            prevans = Query(x.first);
            x.second = 0;
        }
    }

    vector<int> first_half, second_half;
    shuffle(a.begin(), a.end(), rng);
    for(auto x: a) {
        if(sz(second_half) >= sz(right)) {
            first_half.push_back(x);
            continue;
        }
        if(sz(first_half) >= sz(left)) {
            second_half.push_back(x);
            continue;
        }
        int ans = Query(x);
        if(ans == prevans) {
            first_half.push_back(x);
        } else {
            second_half.push_back(x);
        }
        prevans = ans;
    }
    rec(second_half, right);
    rec(first_half, left);
}

void Solve(int n) {
    vector<int> p1, p2;
    vector<int> bulanea(2 * n);
    iota(bulanea.begin(), bulanea.end(), 1);
    shuffle(bulanea.begin(), bulanea.end(), rng);
    for(int i: bulanea) {
        ans = Query(i);
        if(ans == prevans) {
            p2.push_back(i);
        } else {
            p1.push_back(i);
        }
        prevans = ans;
        if(sz(p1) == n) {
            for(int j = 0; j < sz(bulanea); ++j) {
                if(bulanea[j] == i) {
                    for(int f = j + 1; f < sz(bulanea); ++f) {
                        p2.push_back(bulanea[f]);
                    }
                    break;
                }
            }
            break;
        }
    }
    assert(sz(p1) == n && sz(p2) == n);
    vector<pair<int, int>> b;
    int paiu = p2.back();
    //p2.pop_back();
    for(auto x: p1) b.push_back({x, 1});
    rec(p2, b);
    for(auto x: p1) {
        if(!paired[x]) {
            Answer(paiu, x);
        }
    }
}
/*
4
1 5
2 6
3 4
7 8
*/
// g++ -Wall -lm -static -DEVAL -o minerals -O2 minerals.cpp grader.cpp -std=c++17

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 336 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 424 KB Output is correct
2 Correct 3 ms 592 KB Output is correct
3 Correct 6 ms 848 KB Output is correct
4 Correct 12 ms 1480 KB Output is correct
5 Correct 20 ms 2464 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 2 ms 424 KB Output is correct
6 Correct 3 ms 592 KB Output is correct
7 Correct 6 ms 848 KB Output is correct
8 Correct 12 ms 1480 KB Output is correct
9 Correct 20 ms 2464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 13 ms 1812 KB Output is correct
12 Correct 20 ms 2476 KB Output is correct
13 Correct 20 ms 2448 KB Output is correct
14 Correct 21 ms 2548 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 2 ms 424 KB Output is correct
6 Correct 3 ms 592 KB Output is correct
7 Correct 6 ms 848 KB Output is correct
8 Correct 12 ms 1480 KB Output is correct
9 Correct 20 ms 2464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 13 ms 1812 KB Output is correct
12 Correct 20 ms 2476 KB Output is correct
13 Correct 20 ms 2448 KB Output is correct
14 Correct 21 ms 2548 KB Output is correct
15 Correct 63 ms 6140 KB Output is correct
16 Correct 58 ms 6260 KB Output is correct
17 Correct 58 ms 6240 KB Output is correct
18 Correct 58 ms 6044 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 2 ms 424 KB Output is correct
6 Correct 3 ms 592 KB Output is correct
7 Correct 6 ms 848 KB Output is correct
8 Correct 12 ms 1480 KB Output is correct
9 Correct 20 ms 2464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 13 ms 1812 KB Output is correct
12 Correct 20 ms 2476 KB Output is correct
13 Correct 20 ms 2448 KB Output is correct
14 Correct 21 ms 2548 KB Output is correct
15 Correct 63 ms 6140 KB Output is correct
16 Correct 58 ms 6260 KB Output is correct
17 Correct 58 ms 6240 KB Output is correct
18 Correct 58 ms 6044 KB Output is correct
19 Correct 59 ms 6308 KB Output is correct
20 Correct 69 ms 6404 KB Output is correct
21 Correct 58 ms 6276 KB Output is correct
22 Correct 65 ms 6144 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 2 ms 424 KB Output is correct
6 Correct 3 ms 592 KB Output is correct
7 Correct 6 ms 848 KB Output is correct
8 Correct 12 ms 1480 KB Output is correct
9 Correct 20 ms 2464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 13 ms 1812 KB Output is correct
12 Correct 20 ms 2476 KB Output is correct
13 Correct 20 ms 2448 KB Output is correct
14 Correct 21 ms 2548 KB Output is correct
15 Correct 63 ms 6140 KB Output is correct
16 Correct 58 ms 6260 KB Output is correct
17 Correct 58 ms 6240 KB Output is correct
18 Correct 58 ms 6044 KB Output is correct
19 Correct 59 ms 6308 KB Output is correct
20 Correct 69 ms 6404 KB Output is correct
21 Correct 58 ms 6276 KB Output is correct
22 Correct 65 ms 6144 KB Output is correct
23 Correct 72 ms 6484 KB Output is correct
24 Correct 78 ms 6528 KB Output is correct
25 Correct 64 ms 6544 KB Output is correct
26 Correct 64 ms 6368 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 2 ms 424 KB Output is correct
6 Correct 3 ms 592 KB Output is correct
7 Correct 6 ms 848 KB Output is correct
8 Correct 12 ms 1480 KB Output is correct
9 Correct 20 ms 2464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 13 ms 1812 KB Output is correct
12 Correct 20 ms 2476 KB Output is correct
13 Correct 20 ms 2448 KB Output is correct
14 Correct 21 ms 2548 KB Output is correct
15 Correct 63 ms 6140 KB Output is correct
16 Correct 58 ms 6260 KB Output is correct
17 Correct 58 ms 6240 KB Output is correct
18 Correct 58 ms 6044 KB Output is correct
19 Correct 59 ms 6308 KB Output is correct
20 Correct 69 ms 6404 KB Output is correct
21 Correct 58 ms 6276 KB Output is correct
22 Correct 65 ms 6144 KB Output is correct
23 Correct 72 ms 6484 KB Output is correct
24 Correct 78 ms 6528 KB Output is correct
25 Correct 64 ms 6544 KB Output is correct
26 Correct 64 ms 6368 KB Output is correct
27 Correct 61 ms 6644 KB Output is correct
28 Correct 65 ms 6728 KB Output is correct
29 Correct 62 ms 6760 KB Output is correct
30 Correct 64 ms 6420 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 2 ms 424 KB Output is correct
6 Correct 3 ms 592 KB Output is correct
7 Correct 6 ms 848 KB Output is correct
8 Correct 12 ms 1480 KB Output is correct
9 Correct 20 ms 2464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 13 ms 1812 KB Output is correct
12 Correct 20 ms 2476 KB Output is correct
13 Correct 20 ms 2448 KB Output is correct
14 Correct 21 ms 2548 KB Output is correct
15 Correct 63 ms 6140 KB Output is correct
16 Correct 58 ms 6260 KB Output is correct
17 Correct 58 ms 6240 KB Output is correct
18 Correct 58 ms 6044 KB Output is correct
19 Correct 59 ms 6308 KB Output is correct
20 Correct 69 ms 6404 KB Output is correct
21 Correct 58 ms 6276 KB Output is correct
22 Correct 65 ms 6144 KB Output is correct
23 Correct 72 ms 6484 KB Output is correct
24 Correct 78 ms 6528 KB Output is correct
25 Correct 64 ms 6544 KB Output is correct
26 Correct 64 ms 6368 KB Output is correct
27 Correct 61 ms 6644 KB Output is correct
28 Correct 65 ms 6728 KB Output is correct
29 Correct 62 ms 6760 KB Output is correct
30 Correct 64 ms 6420 KB Output is correct
31 Correct 68 ms 6772 KB Output is correct
32 Correct 65 ms 6768 KB Output is correct
33 Correct 64 ms 6796 KB Output is correct
34 Correct 64 ms 6708 KB Output is correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 2 ms 424 KB Output is correct
6 Correct 3 ms 592 KB Output is correct
7 Correct 6 ms 848 KB Output is correct
8 Correct 12 ms 1480 KB Output is correct
9 Correct 20 ms 2464 KB Output is correct
10 Correct 1 ms 464 KB Output is correct
11 Correct 13 ms 1812 KB Output is correct
12 Correct 20 ms 2476 KB Output is correct
13 Correct 20 ms 2448 KB Output is correct
14 Correct 21 ms 2548 KB Output is correct
15 Correct 63 ms 6140 KB Output is correct
16 Correct 58 ms 6260 KB Output is correct
17 Correct 58 ms 6240 KB Output is correct
18 Correct 58 ms 6044 KB Output is correct
19 Correct 59 ms 6308 KB Output is correct
20 Correct 69 ms 6404 KB Output is correct
21 Correct 58 ms 6276 KB Output is correct
22 Correct 65 ms 6144 KB Output is correct
23 Correct 72 ms 6484 KB Output is correct
24 Correct 78 ms 6528 KB Output is correct
25 Correct 64 ms 6544 KB Output is correct
26 Correct 64 ms 6368 KB Output is correct
27 Correct 61 ms 6644 KB Output is correct
28 Correct 65 ms 6728 KB Output is correct
29 Correct 62 ms 6760 KB Output is correct
30 Correct 64 ms 6420 KB Output is correct
31 Correct 68 ms 6772 KB Output is correct
32 Correct 65 ms 6768 KB Output is correct
33 Correct 64 ms 6796 KB Output is correct
34 Correct 64 ms 6708 KB Output is correct
35 Incorrect 59 ms 6840 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -