oj.uz

Submission #796725

# Submission time Handle Problem Language Result Execution time Memory
796725 2023-07-28T16:12:39 Z SlavicG Minerals (JOI19_minerals) C++17
90 / 100
 53 ms 5628 KB 
#include <bits/stdc++.h>
#include "minerals.h"
using namespace std;
 
#define sz(a) (int)a.size()
mt19937 rng(69);
//b - valoarea elementului, stateul (aprins/stins)
int ans = 0, prevans = -1;
const int N = 1e5 + 69;
int in[N], added[N];

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);
        return;
    }
    int mid = (sz(b) < 115 ? sz(b) / 2 : min(sz(b) - 1, sz(b) / 2 + 20));
    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]);
    }

    vector<int> first_half, second_half;
    for(auto& x: a) {
        if(added[x]) continue;
        if(in[x] <= mid) {
            first_half.push_back(x);
            x = -1;
        }
        else added[x] = 1;
    }

    {
        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), swap(first_half, second_half);
    }
 
    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;
        }
    }
 
    shuffle(a.begin(), a.end(), rng);
    for(auto x: a) {
        if(x == -1) continue;
        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) {
    for(int i = 0; i < N; ++i) in[i] = INT_MAX;
    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);
            in[i] = ans;
        } 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;
    for(auto x: p1) b.push_back({x, 1});
    rec(p2, b);
}
/*
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 1 ms 720 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 720 KB Output is correct
2 Correct 2 ms 848 KB Output is correct
3 Correct 4 ms 1104 KB Output is correct
4 Correct 8 ms 1608 KB Output is correct
5 Correct 17 ms 2352 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 4 ms 1104 KB Output is correct
8 Correct 8 ms 1608 KB Output is correct
9 Correct 17 ms 2352 KB Output is correct
10 Correct 1 ms 720 KB Output is correct
11 Correct 11 ms 1948 KB Output is correct
12 Correct 16 ms 2448 KB Output is correct
13 Correct 16 ms 2384 KB Output is correct
14 Correct 16 ms 2380 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 4 ms 1104 KB Output is correct
8 Correct 8 ms 1608 KB Output is correct
9 Correct 17 ms 2352 KB Output is correct
10 Correct 1 ms 720 KB Output is correct
11 Correct 11 ms 1948 KB Output is correct
12 Correct 16 ms 2448 KB Output is correct
13 Correct 16 ms 2384 KB Output is correct
14 Correct 16 ms 2380 KB Output is correct
15 Correct 44 ms 5248 KB Output is correct
16 Correct 44 ms 5212 KB Output is correct
17 Correct 44 ms 5092 KB Output is correct
18 Correct 44 ms 4992 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 4 ms 1104 KB Output is correct
8 Correct 8 ms 1608 KB Output is correct
9 Correct 17 ms 2352 KB Output is correct
10 Correct 1 ms 720 KB Output is correct
11 Correct 11 ms 1948 KB Output is correct
12 Correct 16 ms 2448 KB Output is correct
13 Correct 16 ms 2384 KB Output is correct
14 Correct 16 ms 2380 KB Output is correct
15 Correct 44 ms 5248 KB Output is correct
16 Correct 44 ms 5212 KB Output is correct
17 Correct 44 ms 5092 KB Output is correct
18 Correct 44 ms 4992 KB Output is correct
19 Correct 46 ms 5296 KB Output is correct
20 Correct 47 ms 5320 KB Output is correct
21 Correct 45 ms 5288 KB Output is correct
22 Correct 53 ms 5148 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 4 ms 1104 KB Output is correct
8 Correct 8 ms 1608 KB Output is correct
9 Correct 17 ms 2352 KB Output is correct
10 Correct 1 ms 720 KB Output is correct
11 Correct 11 ms 1948 KB Output is correct
12 Correct 16 ms 2448 KB Output is correct
13 Correct 16 ms 2384 KB Output is correct
14 Correct 16 ms 2380 KB Output is correct
15 Correct 44 ms 5248 KB Output is correct
16 Correct 44 ms 5212 KB Output is correct
17 Correct 44 ms 5092 KB Output is correct
18 Correct 44 ms 4992 KB Output is correct
19 Correct 46 ms 5296 KB Output is correct
20 Correct 47 ms 5320 KB Output is correct
21 Correct 45 ms 5288 KB Output is correct
22 Correct 53 ms 5148 KB Output is correct
23 Correct 52 ms 5480 KB Output is correct
24 Correct 47 ms 5348 KB Output is correct
25 Correct 51 ms 5376 KB Output is correct
26 Correct 47 ms 5320 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 4 ms 1104 KB Output is correct
8 Correct 8 ms 1608 KB Output is correct
9 Correct 17 ms 2352 KB Output is correct
10 Correct 1 ms 720 KB Output is correct
11 Correct 11 ms 1948 KB Output is correct
12 Correct 16 ms 2448 KB Output is correct
13 Correct 16 ms 2384 KB Output is correct
14 Correct 16 ms 2380 KB Output is correct
15 Correct 44 ms 5248 KB Output is correct
16 Correct 44 ms 5212 KB Output is correct
17 Correct 44 ms 5092 KB Output is correct
18 Correct 44 ms 4992 KB Output is correct
19 Correct 46 ms 5296 KB Output is correct
20 Correct 47 ms 5320 KB Output is correct
21 Correct 45 ms 5288 KB Output is correct
22 Correct 53 ms 5148 KB Output is correct
23 Correct 52 ms 5480 KB Output is correct
24 Correct 47 ms 5348 KB Output is correct
25 Correct 51 ms 5376 KB Output is correct
26 Correct 47 ms 5320 KB Output is correct
27 Correct 48 ms 5572 KB Output is correct
28 Correct 47 ms 5544 KB Output is correct
29 Correct 49 ms 5608 KB Output is correct
30 Correct 53 ms 5564 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 4 ms 1104 KB Output is correct
8 Correct 8 ms 1608 KB Output is correct
9 Correct 17 ms 2352 KB Output is correct
10 Correct 1 ms 720 KB Output is correct
11 Correct 11 ms 1948 KB Output is correct
12 Correct 16 ms 2448 KB Output is correct
13 Correct 16 ms 2384 KB Output is correct
14 Correct 16 ms 2380 KB Output is correct
15 Correct 44 ms 5248 KB Output is correct
16 Correct 44 ms 5212 KB Output is correct
17 Correct 44 ms 5092 KB Output is correct
18 Correct 44 ms 4992 KB Output is correct
19 Correct 46 ms 5296 KB Output is correct
20 Correct 47 ms 5320 KB Output is correct
21 Correct 45 ms 5288 KB Output is correct
22 Correct 53 ms 5148 KB Output is correct
23 Correct 52 ms 5480 KB Output is correct
24 Correct 47 ms 5348 KB Output is correct
25 Correct 51 ms 5376 KB Output is correct
26 Correct 47 ms 5320 KB Output is correct
27 Correct 48 ms 5572 KB Output is correct
28 Correct 47 ms 5544 KB Output is correct
29 Correct 49 ms 5608 KB Output is correct
30 Correct 53 ms 5564 KB Output is correct
31 Correct 49 ms 5576 KB Output is correct
32 Correct 53 ms 5628 KB Output is correct
33 Correct 50 ms 5592 KB Output is correct
34 Correct 49 ms 5496 KB Output is correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 720 KB Output is correct
2 Correct 1 ms 592 KB Output is correct
3 Correct 1 ms 720 KB Output is correct
4 Correct 1 ms 720 KB Output is correct
5 Correct 2 ms 720 KB Output is correct
6 Correct 2 ms 848 KB Output is correct
7 Correct 4 ms 1104 KB Output is correct
8 Correct 8 ms 1608 KB Output is correct
9 Correct 17 ms 2352 KB Output is correct
10 Correct 1 ms 720 KB Output is correct
11 Correct 11 ms 1948 KB Output is correct
12 Correct 16 ms 2448 KB Output is correct
13 Correct 16 ms 2384 KB Output is correct
14 Correct 16 ms 2380 KB Output is correct
15 Correct 44 ms 5248 KB Output is correct
16 Correct 44 ms 5212 KB Output is correct
17 Correct 44 ms 5092 KB Output is correct
18 Correct 44 ms 4992 KB Output is correct
19 Correct 46 ms 5296 KB Output is correct
20 Correct 47 ms 5320 KB Output is correct
21 Correct 45 ms 5288 KB Output is correct
22 Correct 53 ms 5148 KB Output is correct
23 Correct 52 ms 5480 KB Output is correct
24 Correct 47 ms 5348 KB Output is correct
25 Correct 51 ms 5376 KB Output is correct
26 Correct 47 ms 5320 KB Output is correct
27 Correct 48 ms 5572 KB Output is correct
28 Correct 47 ms 5544 KB Output is correct
29 Correct 49 ms 5608 KB Output is correct
30 Correct 53 ms 5564 KB Output is correct
31 Correct 49 ms 5576 KB Output is correct
32 Correct 53 ms 5628 KB Output is correct
33 Correct 50 ms 5592 KB Output is correct
34 Correct 49 ms 5496 KB Output is correct
35 Incorrect 53 ms 5604 KB Wrong Answer [2]
36 Halted 0 ms 0 KB -