oj.uz

Submission #408783

# Submission time Handle Problem Language Result Execution time Memory
408783 2021-05-19T15:54:44 Z idk321 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 152 ms 11424 KB 
#include "shoes.h"
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

int n;
const int N = 200005;
int tree[4 * N];

void ins(int num, int i, int a, int b, int node)
{
    if (a == b)
    {
        tree[node] = num;
        return;
    }

    int mid = (a + b) / 2;
    if (i <= mid) ins(num, i, a, mid, node * 2);
    if (i > mid) ins(num,i ,mid + 1, b, node * 2 + 1);

    tree[node] = tree[node * 2] + tree[node * 2 + 1];
}

int getSum(int from, int to, int a, int b, int node)
{
    if (from <= a && b <= to) return tree[node];

    int mid = (a + b) / 2;
    int res = 0;
    if (from <= mid) res += getSum(from, to, a, mid, node * 2);
    if (to > mid) res += getSum(from, to, mid + 1, b, node * 2+ 1);

    return res;
}



long long count_swaps(std::vector<int> s) {
    n = s.size() / 2;
    vector<vector<int>> isAt(n + 1);
    for (int i = 0; i < s.size(); i++)
    {
        if (s[i] < 0) isAt[abs(s[i])].push_back(i);
    }

    vector<int> match(s.size());
    for (int i = s.size() - 1; i >= 0; i--)
    {
        if (s[i] > 0)
        {
            match[i] = isAt[s[i]].back();
            match[isAt[s[i]].back()] = i;
            isAt[s[i]].pop_back();

        }
    }

    ll res = 0;


    for (int i = 0; i < 2 * n; i++) ins(1, i, 0, N - 1, 1);
    for (int i = 0; i < 2 * n; i++)
    {
        if (match[i] > i)
        {
            if (s[i] > 0)
            {
                res++;
            }

            res += getSum(i + 1, match[i] - 1, 0, N - 1, 1);
            ins(0, i, 0, N - 1, 1);
            ins(0, match[i], 0, N - 1, 1);
        }
    }

	return res;
}

/*
5
1 2 -2 2 -2 -1 3 2 -3 -2
*/

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:43:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for (int i = 0; i < s.size(); i++)
      |                     ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 216 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 2 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 2 ms 332 KB Output is correct
20 Correct 12 ms 1228 KB Output is correct
21 Correct 12 ms 1216 KB Output is correct
22 Correct 113 ms 8836 KB Output is correct
23 Correct 101 ms 8836 KB Output is correct
24 Correct 108 ms 8832 KB Output is correct
25 Correct 110 ms 8612 KB Output is correct
26 Correct 112 ms 8836 KB Output is correct
27 Correct 104 ms 8636 KB Output is correct
28 Correct 111 ms 8732 KB Output is correct
29 Correct 112 ms 8740 KB Output is correct
30 Correct 118 ms 8736 KB Output is correct
31 Correct 116 ms 8836 KB Output is correct
32 Correct 120 ms 8840 KB Output is correct
33 Correct 112 ms 8612 KB Output is correct
34 Correct 115 ms 8840 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 300 KB Output is correct
37 Correct 111 ms 8740 KB Output is correct
38 Correct 110 ms 8752 KB Output is correct
39 Correct 110 ms 8828 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 128 ms 11304 KB Output is correct
6 Correct 119 ms 8952 KB Output is correct
7 Correct 133 ms 11420 KB Output is correct
8 Correct 111 ms 8840 KB Output is correct
9 Correct 130 ms 11424 KB Output is correct
10 Correct 130 ms 9972 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 216 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 2 ms 332 KB Output is correct
42 Correct 2 ms 332 KB Output is correct
43 Correct 2 ms 332 KB Output is correct
44 Correct 2 ms 332 KB Output is correct
45 Correct 2 ms 332 KB Output is correct
46 Correct 2 ms 332 KB Output is correct
47 Correct 2 ms 332 KB Output is correct
48 Correct 2 ms 332 KB Output is correct
49 Correct 2 ms 332 KB Output is correct
50 Correct 2 ms 332 KB Output is correct
51 Correct 2 ms 332 KB Output is correct
52 Correct 2 ms 332 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 216 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 332 KB Output is correct
43 Correct 1 ms 332 KB Output is correct
44 Correct 1 ms 332 KB Output is correct
45 Correct 1 ms 332 KB Output is correct
46 Correct 2 ms 332 KB Output is correct
47 Correct 1 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 2 ms 332 KB Output is correct
53 Correct 2 ms 332 KB Output is correct
54 Correct 12 ms 1228 KB Output is correct
55 Correct 12 ms 1216 KB Output is correct
56 Correct 113 ms 8836 KB Output is correct
57 Correct 101 ms 8836 KB Output is correct
58 Correct 108 ms 8832 KB Output is correct
59 Correct 110 ms 8612 KB Output is correct
60 Correct 112 ms 8836 KB Output is correct
61 Correct 104 ms 8636 KB Output is correct
62 Correct 111 ms 8732 KB Output is correct
63 Correct 112 ms 8740 KB Output is correct
64 Correct 118 ms 8736 KB Output is correct
65 Correct 116 ms 8836 KB Output is correct
66 Correct 120 ms 8840 KB Output is correct
67 Correct 112 ms 8612 KB Output is correct
68 Correct 115 ms 8840 KB Output is correct
69 Correct 1 ms 332 KB Output is correct
70 Correct 1 ms 300 KB Output is correct
71 Correct 111 ms 8740 KB Output is correct
72 Correct 110 ms 8752 KB Output is correct
73 Correct 110 ms 8828 KB Output is correct
74 Correct 1 ms 332 KB Output is correct
75 Correct 1 ms 332 KB Output is correct
76 Correct 1 ms 332 KB Output is correct
77 Correct 1 ms 332 KB Output is correct
78 Correct 128 ms 11304 KB Output is correct
79 Correct 119 ms 8952 KB Output is correct
80 Correct 133 ms 11420 KB Output is correct
81 Correct 111 ms 8840 KB Output is correct
82 Correct 130 ms 11424 KB Output is correct
83 Correct 130 ms 9972 KB Output is correct
84 Correct 1 ms 332 KB Output is correct
85 Correct 1 ms 332 KB Output is correct
86 Correct 1 ms 332 KB Output is correct
87 Correct 1 ms 332 KB Output is correct
88 Correct 2 ms 332 KB Output is correct
89 Correct 2 ms 332 KB Output is correct
90 Correct 2 ms 332 KB Output is correct
91 Correct 2 ms 332 KB Output is correct
92 Correct 2 ms 332 KB Output is correct
93 Correct 2 ms 332 KB Output is correct
94 Correct 2 ms 332 KB Output is correct
95 Correct 2 ms 332 KB Output is correct
96 Correct 2 ms 332 KB Output is correct
97 Correct 2 ms 332 KB Output is correct
98 Correct 2 ms 332 KB Output is correct
99 Correct 2 ms 332 KB Output is correct
100 Correct 3 ms 436 KB Output is correct
101 Correct 18 ms 1328 KB Output is correct
102 Correct 16 ms 1100 KB Output is correct
103 Correct 152 ms 11352 KB Output is correct
104 Correct 119 ms 11324 KB Output is correct
105 Correct 140 ms 10020 KB Output is correct
106 Correct 132 ms 11300 KB Output is correct
107 Correct 117 ms 9100 KB Output is correct
108 Correct 114 ms 9288 KB Output is correct
109 Correct 114 ms 8724 KB Output is correct
110 Correct 112 ms 8740 KB Output is correct
111 Correct 134 ms 11072 KB Output is correct
112 Correct 149 ms 10692 KB Output is correct
113 Correct 132 ms 9004 KB Output is correct
114 Correct 127 ms 11316 KB Output is correct
115 Correct 126 ms 11400 KB Output is correct