oj.uz

답안 #797494

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
797494 2023-07-29T12:57:56 Z Liudas Arranging Shoes (IOI19_shoes) C++17
100 / 100
 665 ms 157324 KB 
#include <bits/stdc++.h>
using namespace std;
struct fenwick_tree{
    vector<int> tree;
    fenwick_tree(int N){
        tree.assign(N + 5, 0);
        for(int i = 1; i <= N; i ++){
            for(int j = i; j < tree.size(); j += (j & -j)){
                tree[j] ++;
            }
        }
    }
    void rem(int p){
        for(int i = p; i < tree.size(); i += (i & -i)){
            tree[i]--;
        }
    }
    int sum(int p){
        int s = 0;
        for(int i = p; i > 0; i -= (i & -i)){
            s += tree[i];
        }
        return s;
    }
};
long long count_swaps(vector<int> S){
    long long N = S.size();
    fenwick_tree tree(N);
    map<int, queue<int>> arr;
    set<int> left;
    long long ans = 0;
    for(int i = 0; i < N; i ++){
        left.insert(i);
        arr[S[i]].push(i);
    }
    for(int i = 0; i < N / 2; i ++){
        int s = *left.begin();
        left.erase(s);
        int b = arr[-S[s]].front();
        left.erase(b);
        arr[S[s]].pop();
        arr[-S[s]].pop();
        if(S[s] > 0){
            ans += tree.sum(b+1) - tree.sum(s+1);
        }
        else{
            ans += tree.sum(b+1) - tree.sum(s+1) - 1;
        }
        tree.rem(s+1);
        tree.rem(b+1);
    }
    return ans;
}

Compilation message

shoes.cpp: In constructor 'fenwick_tree::fenwick_tree(int)':
shoes.cpp:8:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |             for(int j = i; j < tree.size(); j += (j & -j)){
      |                            ~~^~~~~~~~~~~~~
shoes.cpp: In member function 'void fenwick_tree::rem(int)':
shoes.cpp:14:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |         for(int i = p; i < tree.size(); i += (i & -i)){
      |                        ~~^~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 296 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 296 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 300 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 312 KB Output is correct
36 Correct 1 ms 212 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 6 ms 1588 KB Output is correct
21 Correct 6 ms 1620 KB Output is correct
22 Correct 62 ms 14120 KB Output is correct
23 Correct 61 ms 14104 KB Output is correct
24 Correct 71 ms 14100 KB Output is correct
25 Correct 58 ms 13872 KB Output is correct
26 Correct 63 ms 14136 KB Output is correct
27 Correct 51 ms 13888 KB Output is correct
28 Correct 56 ms 14128 KB Output is correct
29 Correct 55 ms 14028 KB Output is correct
30 Correct 58 ms 14100 KB Output is correct
31 Correct 63 ms 14124 KB Output is correct
32 Correct 55 ms 14120 KB Output is correct
33 Correct 55 ms 13856 KB Output is correct
34 Correct 56 ms 14036 KB Output is correct
35 Correct 1 ms 296 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 58 ms 14140 KB Output is correct
38 Correct 54 ms 14124 KB Output is correct
39 Correct 57 ms 14136 KB Output is correct

Subtask #4
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 296 KB Output is correct
5 Correct 531 ms 157224 KB Output is correct
6 Correct 164 ms 25804 KB Output is correct
7 Correct 517 ms 157312 KB Output is correct
8 Correct 62 ms 14028 KB Output is correct
9 Correct 509 ms 157324 KB Output is correct
10 Correct 330 ms 85256 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 296 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 296 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 300 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 312 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 432 KB Output is correct
40 Correct 1 ms 596 KB Output is correct
41 Correct 2 ms 1748 KB Output is correct
42 Correct 2 ms 1748 KB Output is correct
43 Correct 2 ms 1620 KB Output is correct
44 Correct 3 ms 1492 KB Output is correct
45 Correct 2 ms 1236 KB Output is correct
46 Correct 2 ms 1108 KB Output is correct
47 Correct 2 ms 980 KB Output is correct
48 Correct 2 ms 852 KB Output is correct
49 Correct 2 ms 684 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 2 ms 1844 KB Output is correct

Subtask #6
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 304 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 296 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 296 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 300 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 1 ms 212 KB Output is correct
35 Correct 0 ms 312 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 1 ms 212 KB Output is correct
42 Correct 1 ms 300 KB Output is correct
43 Correct 1 ms 212 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 0 ms 212 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 1 ms 212 KB Output is correct
49 Correct 1 ms 212 KB Output is correct
50 Correct 1 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 6 ms 1588 KB Output is correct
55 Correct 6 ms 1620 KB Output is correct
56 Correct 62 ms 14120 KB Output is correct
57 Correct 61 ms 14104 KB Output is correct
58 Correct 71 ms 14100 KB Output is correct
59 Correct 58 ms 13872 KB Output is correct
60 Correct 63 ms 14136 KB Output is correct
61 Correct 51 ms 13888 KB Output is correct
62 Correct 56 ms 14128 KB Output is correct
63 Correct 55 ms 14028 KB Output is correct
64 Correct 58 ms 14100 KB Output is correct
65 Correct 63 ms 14124 KB Output is correct
66 Correct 55 ms 14120 KB Output is correct
67 Correct 55 ms 13856 KB Output is correct
68 Correct 56 ms 14036 KB Output is correct
69 Correct 1 ms 296 KB Output is correct
70 Correct 1 ms 212 KB Output is correct
71 Correct 58 ms 14140 KB Output is correct
72 Correct 54 ms 14124 KB Output is correct
73 Correct 57 ms 14136 KB Output is correct
74 Correct 1 ms 212 KB Output is correct
75 Correct 1 ms 212 KB Output is correct
76 Correct 0 ms 212 KB Output is correct
77 Correct 1 ms 296 KB Output is correct
78 Correct 531 ms 157224 KB Output is correct
79 Correct 164 ms 25804 KB Output is correct
80 Correct 517 ms 157312 KB Output is correct
81 Correct 62 ms 14028 KB Output is correct
82 Correct 509 ms 157324 KB Output is correct
83 Correct 330 ms 85256 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 1 ms 340 KB Output is correct
86 Correct 1 ms 432 KB Output is correct
87 Correct 1 ms 596 KB Output is correct
88 Correct 2 ms 1748 KB Output is correct
89 Correct 2 ms 1748 KB Output is correct
90 Correct 2 ms 1620 KB Output is correct
91 Correct 3 ms 1492 KB Output is correct
92 Correct 2 ms 1236 KB Output is correct
93 Correct 2 ms 1108 KB Output is correct
94 Correct 2 ms 980 KB Output is correct
95 Correct 2 ms 852 KB Output is correct
96 Correct 2 ms 684 KB Output is correct
97 Correct 1 ms 340 KB Output is correct
98 Correct 1 ms 340 KB Output is correct
99 Correct 2 ms 1844 KB Output is correct
100 Correct 2 ms 1844 KB Output is correct
101 Correct 26 ms 14504 KB Output is correct
102 Correct 14 ms 4368 KB Output is correct
103 Correct 665 ms 157268 KB Output is correct
104 Correct 498 ms 157308 KB Output is correct
105 Correct 425 ms 95028 KB Output is correct
106 Correct 519 ms 157316 KB Output is correct
107 Correct 182 ms 29196 KB Output is correct
108 Correct 213 ms 45260 KB Output is correct
109 Correct 71 ms 14124 KB Output is correct
110 Correct 57 ms 14024 KB Output is correct
111 Correct 471 ms 141268 KB Output is correct
112 Correct 537 ms 125352 KB Output is correct
113 Correct 199 ms 31024 KB Output is correct
114 Correct 498 ms 157312 KB Output is correct
115 Correct 484 ms 157228 KB Output is correct