oj.uz

Submission #705204

# Submission time Handle Problem Language Result Execution time Memory
705204 2023-03-03T15:05:02 Z stoyan_malinin Arranging Shoes (IOI19_shoes) C++14
100 / 100
 280 ms 148900 KB 
#include<iostream>
#include<cstring>
#include<vector>
#include<queue>
#include<set>

using namespace std;

const int MAXN = 1e5;

struct FenwickTree
{
    int tree[MAXN * 2 + 5];

    FenwickTree()
    {
        memset(this->tree, 0, sizeof(this->tree));
    }

    void update(int index, int value)
    {
        index++;
        while (index < MAXN*2 + 5)
        {
            tree[index] += value;
            index += index&(-index);
        }
    }

    int query(int index)
    {
        int sum = 0;

        index++;
        while (index>0)
        {
            sum += tree[index];
            index -= index&(-index);
        }

        return sum;
    }
};

FenwickTree *T = new FenwickTree();
queue <int> leftShoes[MAXN + 5], rightShoes[MAXN + 5];

int calcValue(int leftShoeInd, int rightShoeInd)
{
    int val = leftShoeInd + (rightShoeInd - 1);
    if (leftShoeInd > rightShoeInd) val++;

    return val;
}

int64_t count_swaps(vector <int> s)
{
    set <int> allIndexes;
    for (int i = 0;i<s.size();i++)
    {
        allIndexes.insert(i);

        if (s[i] < 0) leftShoes[ -s[i] ].push(i);
        else rightShoes[ s[i] ].push(i);
    }

    int64_t answer = 0;
    for (int index = 0; index < s.size(); index += 2)
    {
        int bestIndex = -1;
        int leftShoeFakeInd, rightShoeFakeInd;

        bestIndex = abs(s[*allIndexes.begin()]);
        allIndexes.erase(leftShoes[bestIndex].front());
        allIndexes.erase(rightShoes[bestIndex].front());

        leftShoeFakeInd = leftShoes[bestIndex].front() - T->query(leftShoes[bestIndex].front());
        rightShoeFakeInd = rightShoes[bestIndex].front() - T->query(rightShoes[bestIndex].front());

        T->update(leftShoes[bestIndex].front(), 1);
        T->update(rightShoes[bestIndex].front(), 1);

        leftShoes[bestIndex].pop();
        rightShoes[bestIndex].pop();

        answer += calcValue(leftShoeFakeInd, rightShoeFakeInd);
    }

    return answer;
}

Compilation message

shoes.cpp: In function 'int64_t count_swaps(std::vector<int>)':
shoes.cpp:59:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |     for (int i = 0;i<s.size();i++)
      |                    ~^~~~~~~~~
shoes.cpp:68:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |     for (int index = 0; index < s.size(); index += 2)
      |                         ~~~~~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 135628 KB Output is correct
2 Correct 79 ms 135652 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 135628 KB Output is correct
2 Correct 79 ms 135652 KB Output is correct
3 Correct 83 ms 135680 KB Output is correct
4 Correct 90 ms 135660 KB Output is correct
5 Correct 82 ms 135620 KB Output is correct
6 Correct 81 ms 135644 KB Output is correct
7 Correct 83 ms 135652 KB Output is correct
8 Correct 77 ms 135720 KB Output is correct
9 Correct 78 ms 135712 KB Output is correct
10 Correct 80 ms 135628 KB Output is correct
11 Correct 85 ms 135604 KB Output is correct
12 Correct 82 ms 135724 KB Output is correct
13 Correct 82 ms 135608 KB Output is correct
14 Correct 87 ms 135720 KB Output is correct
15 Correct 85 ms 135688 KB Output is correct
16 Correct 86 ms 135620 KB Output is correct
17 Correct 90 ms 135628 KB Output is correct
18 Correct 86 ms 135724 KB Output is correct
19 Correct 82 ms 135628 KB Output is correct
20 Correct 82 ms 135720 KB Output is correct
21 Correct 86 ms 135672 KB Output is correct
22 Correct 95 ms 135728 KB Output is correct
23 Correct 86 ms 135604 KB Output is correct
24 Correct 91 ms 135644 KB Output is correct
25 Correct 94 ms 135688 KB Output is correct
26 Correct 84 ms 135672 KB Output is correct
27 Correct 90 ms 135688 KB Output is correct
28 Correct 103 ms 135724 KB Output is correct
29 Correct 93 ms 135664 KB Output is correct
30 Correct 90 ms 135704 KB Output is correct
31 Correct 97 ms 135712 KB Output is correct
32 Correct 84 ms 135704 KB Output is correct
33 Correct 87 ms 135716 KB Output is correct
34 Correct 85 ms 135728 KB Output is correct
35 Correct 90 ms 135732 KB Output is correct
36 Correct 87 ms 135760 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 135628 KB Output is correct
2 Correct 79 ms 135652 KB Output is correct
3 Correct 92 ms 135728 KB Output is correct
4 Correct 96 ms 135632 KB Output is correct
5 Correct 94 ms 135636 KB Output is correct
6 Correct 90 ms 135608 KB Output is correct
7 Correct 85 ms 135704 KB Output is correct
8 Correct 89 ms 135740 KB Output is correct
9 Correct 89 ms 135648 KB Output is correct
10 Correct 88 ms 135728 KB Output is correct
11 Correct 83 ms 135672 KB Output is correct
12 Correct 87 ms 135628 KB Output is correct
13 Correct 88 ms 135728 KB Output is correct
14 Correct 95 ms 135692 KB Output is correct
15 Correct 92 ms 135732 KB Output is correct
16 Correct 88 ms 135688 KB Output is correct
17 Correct 93 ms 135740 KB Output is correct
18 Correct 87 ms 135816 KB Output is correct
19 Correct 111 ms 135732 KB Output is correct
20 Correct 116 ms 136932 KB Output is correct
21 Correct 97 ms 136996 KB Output is correct
22 Correct 158 ms 147708 KB Output is correct
23 Correct 174 ms 147644 KB Output is correct
24 Correct 169 ms 148900 KB Output is correct
25 Correct 154 ms 148524 KB Output is correct
26 Correct 154 ms 148796 KB Output is correct
27 Correct 154 ms 148524 KB Output is correct
28 Correct 152 ms 148780 KB Output is correct
29 Correct 154 ms 148684 KB Output is correct
30 Correct 170 ms 148804 KB Output is correct
31 Correct 160 ms 148752 KB Output is correct
32 Correct 159 ms 148720 KB Output is correct
33 Correct 168 ms 148572 KB Output is correct
34 Correct 156 ms 148728 KB Output is correct
35 Correct 84 ms 135732 KB Output is correct
36 Correct 88 ms 135676 KB Output is correct
37 Correct 158 ms 148780 KB Output is correct
38 Correct 161 ms 148772 KB Output is correct
39 Correct 156 ms 148780 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 85 ms 135624 KB Output is correct
2 Correct 80 ms 135684 KB Output is correct
3 Correct 85 ms 135744 KB Output is correct
4 Correct 80 ms 135628 KB Output is correct
5 Correct 246 ms 146628 KB Output is correct
6 Correct 183 ms 146628 KB Output is correct
7 Correct 223 ms 146636 KB Output is correct
8 Correct 162 ms 147620 KB Output is correct
9 Correct 221 ms 146584 KB Output is correct
10 Correct 216 ms 147880 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 135628 KB Output is correct
2 Correct 79 ms 135652 KB Output is correct
3 Correct 83 ms 135680 KB Output is correct
4 Correct 90 ms 135660 KB Output is correct
5 Correct 82 ms 135620 KB Output is correct
6 Correct 81 ms 135644 KB Output is correct
7 Correct 83 ms 135652 KB Output is correct
8 Correct 77 ms 135720 KB Output is correct
9 Correct 78 ms 135712 KB Output is correct
10 Correct 80 ms 135628 KB Output is correct
11 Correct 85 ms 135604 KB Output is correct
12 Correct 82 ms 135724 KB Output is correct
13 Correct 82 ms 135608 KB Output is correct
14 Correct 87 ms 135720 KB Output is correct
15 Correct 85 ms 135688 KB Output is correct
16 Correct 86 ms 135620 KB Output is correct
17 Correct 90 ms 135628 KB Output is correct
18 Correct 86 ms 135724 KB Output is correct
19 Correct 82 ms 135628 KB Output is correct
20 Correct 82 ms 135720 KB Output is correct
21 Correct 86 ms 135672 KB Output is correct
22 Correct 95 ms 135728 KB Output is correct
23 Correct 86 ms 135604 KB Output is correct
24 Correct 91 ms 135644 KB Output is correct
25 Correct 94 ms 135688 KB Output is correct
26 Correct 84 ms 135672 KB Output is correct
27 Correct 90 ms 135688 KB Output is correct
28 Correct 103 ms 135724 KB Output is correct
29 Correct 93 ms 135664 KB Output is correct
30 Correct 90 ms 135704 KB Output is correct
31 Correct 97 ms 135712 KB Output is correct
32 Correct 84 ms 135704 KB Output is correct
33 Correct 87 ms 135716 KB Output is correct
34 Correct 85 ms 135728 KB Output is correct
35 Correct 90 ms 135732 KB Output is correct
36 Correct 87 ms 135760 KB Output is correct
37 Correct 79 ms 135716 KB Output is correct
38 Correct 96 ms 135724 KB Output is correct
39 Correct 80 ms 135760 KB Output is correct
40 Correct 80 ms 135720 KB Output is correct
41 Correct 79 ms 135756 KB Output is correct
42 Correct 78 ms 135760 KB Output is correct
43 Correct 82 ms 135756 KB Output is correct
44 Correct 76 ms 135756 KB Output is correct
45 Correct 79 ms 135788 KB Output is correct
46 Correct 79 ms 135792 KB Output is correct
47 Correct 88 ms 135732 KB Output is correct
48 Correct 80 ms 135820 KB Output is correct
49 Correct 80 ms 135728 KB Output is correct
50 Correct 80 ms 135812 KB Output is correct
51 Correct 86 ms 135768 KB Output is correct
52 Correct 88 ms 135756 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 79 ms 135628 KB Output is correct
2 Correct 79 ms 135652 KB Output is correct
3 Correct 83 ms 135680 KB Output is correct
4 Correct 90 ms 135660 KB Output is correct
5 Correct 82 ms 135620 KB Output is correct
6 Correct 81 ms 135644 KB Output is correct
7 Correct 83 ms 135652 KB Output is correct
8 Correct 77 ms 135720 KB Output is correct
9 Correct 78 ms 135712 KB Output is correct
10 Correct 80 ms 135628 KB Output is correct
11 Correct 85 ms 135604 KB Output is correct
12 Correct 82 ms 135724 KB Output is correct
13 Correct 82 ms 135608 KB Output is correct
14 Correct 87 ms 135720 KB Output is correct
15 Correct 85 ms 135688 KB Output is correct
16 Correct 86 ms 135620 KB Output is correct
17 Correct 90 ms 135628 KB Output is correct
18 Correct 86 ms 135724 KB Output is correct
19 Correct 82 ms 135628 KB Output is correct
20 Correct 82 ms 135720 KB Output is correct
21 Correct 86 ms 135672 KB Output is correct
22 Correct 95 ms 135728 KB Output is correct
23 Correct 86 ms 135604 KB Output is correct
24 Correct 91 ms 135644 KB Output is correct
25 Correct 94 ms 135688 KB Output is correct
26 Correct 84 ms 135672 KB Output is correct
27 Correct 90 ms 135688 KB Output is correct
28 Correct 103 ms 135724 KB Output is correct
29 Correct 93 ms 135664 KB Output is correct
30 Correct 90 ms 135704 KB Output is correct
31 Correct 97 ms 135712 KB Output is correct
32 Correct 84 ms 135704 KB Output is correct
33 Correct 87 ms 135716 KB Output is correct
34 Correct 85 ms 135728 KB Output is correct
35 Correct 90 ms 135732 KB Output is correct
36 Correct 87 ms 135760 KB Output is correct
37 Correct 92 ms 135728 KB Output is correct
38 Correct 96 ms 135632 KB Output is correct
39 Correct 94 ms 135636 KB Output is correct
40 Correct 90 ms 135608 KB Output is correct
41 Correct 85 ms 135704 KB Output is correct
42 Correct 89 ms 135740 KB Output is correct
43 Correct 89 ms 135648 KB Output is correct
44 Correct 88 ms 135728 KB Output is correct
45 Correct 83 ms 135672 KB Output is correct
46 Correct 87 ms 135628 KB Output is correct
47 Correct 88 ms 135728 KB Output is correct
48 Correct 95 ms 135692 KB Output is correct
49 Correct 92 ms 135732 KB Output is correct
50 Correct 88 ms 135688 KB Output is correct
51 Correct 93 ms 135740 KB Output is correct
52 Correct 87 ms 135816 KB Output is correct
53 Correct 111 ms 135732 KB Output is correct
54 Correct 116 ms 136932 KB Output is correct
55 Correct 97 ms 136996 KB Output is correct
56 Correct 158 ms 147708 KB Output is correct
57 Correct 174 ms 147644 KB Output is correct
58 Correct 169 ms 148900 KB Output is correct
59 Correct 154 ms 148524 KB Output is correct
60 Correct 154 ms 148796 KB Output is correct
61 Correct 154 ms 148524 KB Output is correct
62 Correct 152 ms 148780 KB Output is correct
63 Correct 154 ms 148684 KB Output is correct
64 Correct 170 ms 148804 KB Output is correct
65 Correct 160 ms 148752 KB Output is correct
66 Correct 159 ms 148720 KB Output is correct
67 Correct 168 ms 148572 KB Output is correct
68 Correct 156 ms 148728 KB Output is correct
69 Correct 84 ms 135732 KB Output is correct
70 Correct 88 ms 135676 KB Output is correct
71 Correct 158 ms 148780 KB Output is correct
72 Correct 161 ms 148772 KB Output is correct
73 Correct 156 ms 148780 KB Output is correct
74 Correct 85 ms 135624 KB Output is correct
75 Correct 80 ms 135684 KB Output is correct
76 Correct 85 ms 135744 KB Output is correct
77 Correct 80 ms 135628 KB Output is correct
78 Correct 246 ms 146628 KB Output is correct
79 Correct 183 ms 146628 KB Output is correct
80 Correct 223 ms 146636 KB Output is correct
81 Correct 162 ms 147620 KB Output is correct
82 Correct 221 ms 146584 KB Output is correct
83 Correct 216 ms 147880 KB Output is correct
84 Correct 79 ms 135716 KB Output is correct
85 Correct 96 ms 135724 KB Output is correct
86 Correct 80 ms 135760 KB Output is correct
87 Correct 80 ms 135720 KB Output is correct
88 Correct 79 ms 135756 KB Output is correct
89 Correct 78 ms 135760 KB Output is correct
90 Correct 82 ms 135756 KB Output is correct
91 Correct 76 ms 135756 KB Output is correct
92 Correct 79 ms 135788 KB Output is correct
93 Correct 79 ms 135792 KB Output is correct
94 Correct 88 ms 135732 KB Output is correct
95 Correct 80 ms 135820 KB Output is correct
96 Correct 80 ms 135728 KB Output is correct
97 Correct 80 ms 135812 KB Output is correct
98 Correct 86 ms 135768 KB Output is correct
99 Correct 88 ms 135756 KB Output is correct
100 Correct 81 ms 135772 KB Output is correct
101 Correct 90 ms 136824 KB Output is correct
102 Correct 88 ms 136896 KB Output is correct
103 Correct 280 ms 147932 KB Output is correct
104 Correct 238 ms 147820 KB Output is correct
105 Correct 239 ms 147896 KB Output is correct
106 Correct 217 ms 148016 KB Output is correct
107 Correct 198 ms 147932 KB Output is correct
108 Correct 207 ms 147816 KB Output is correct
109 Correct 153 ms 148784 KB Output is correct
110 Correct 150 ms 148720 KB Output is correct
111 Correct 231 ms 147916 KB Output is correct
112 Correct 252 ms 147828 KB Output is correct
113 Correct 229 ms 147928 KB Output is correct
114 Correct 229 ms 148016 KB Output is correct
115 Correct 225 ms 147928 KB Output is correct