oj.uz

Submission #280099

# Submission time Handle Problem Language Result Execution time Memory
280099 2020-08-22T13:31:59 Z ec1117 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 92 ms 12784 KB 
/**
 * Description: range sum queries and point updates for $D$ dimensions
 * Source: https://codeforces.com/blog/entry/64914
 * Verification: SPOJ matsum
 * Usage: \texttt{BIT<int,10,10>} gives 2D BIT
 * Time: O((\log N)^D)
 */


#include "bits/stdc++.h"
#include "shoes.h"
using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> pi;

#define pb push_back
#define mp make_pair
#define sz(v) ((int)(v).size())

const int MAXN = 200005;

struct bit{
    int tree[MAXN];
    void add(int x, int v){
        for(int i=x; i<MAXN; i+=i&-i) tree[i] += v;
    }
    int query(int x){
        int ret = 0;
        for(int i=x; i; i-=i&-i) ret += tree[i];
        return ret;
    }
}bit;


vector<pi> order[MAXN];
vector<pi> calc;
ll count_swaps(vector<int> s){
    int n = sz(s) / 2;
    ll ret=0;
    for(int i=0;i<sz(s);i++)
        order[abs(s[i])].emplace_back(s[i], i);
    for(int i=1;i<=MAXN;i++){
        sort(order[i].begin(), order[i].end());
        for(int j=0;j<order[i].size()/2;j++){
            int l = order[i][j].second;
            int r = order[i][j + sz(order[i])/2].second;
            if(l>r) {
                ret++;
                swap(l,r);
            }
            calc.emplace_back(l + 1, r + 1);
        }
    }
    for(int i=1; i<=2*n; i++) bit.add(i, 1);
    sort(calc.begin(),calc.end());
    for(pi x:calc){
        ret += bit.query(x.second - 1) - bit.query(x.first);
        bit.add(x.second,-1);
        bit.add(x.first,-1);
    }
    return ret;
}

Compilation message

shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:46:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         for(int j=0;j<order[i].size()/2;j++){
      |                     ~^~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 5 ms 4992 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 4 ms 4992 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 4 ms 4992 KB Output is correct
25 Correct 4 ms 4992 KB Output is correct
26 Correct 4 ms 4992 KB Output is correct
27 Correct 4 ms 4992 KB Output is correct
28 Correct 5 ms 4992 KB Output is correct
29 Correct 4 ms 4992 KB Output is correct
30 Correct 4 ms 4992 KB Output is correct
31 Correct 4 ms 4992 KB Output is correct
32 Correct 4 ms 4992 KB Output is correct
33 Correct 4 ms 4992 KB Output is correct
34 Correct 4 ms 4992 KB Output is correct
35 Correct 4 ms 4992 KB Output is correct
36 Correct 4 ms 4992 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 5 ms 5120 KB Output is correct
19 Correct 5 ms 5120 KB Output is correct
20 Correct 10 ms 5628 KB Output is correct
21 Correct 10 ms 5628 KB Output is correct
22 Correct 64 ms 10728 KB Output is correct
23 Correct 61 ms 12008 KB Output is correct
24 Correct 68 ms 12008 KB Output is correct
25 Correct 53 ms 11880 KB Output is correct
26 Correct 65 ms 12008 KB Output is correct
27 Correct 56 ms 11752 KB Output is correct
28 Correct 53 ms 12008 KB Output is correct
29 Correct 54 ms 12040 KB Output is correct
30 Correct 54 ms 12008 KB Output is correct
31 Correct 65 ms 12008 KB Output is correct
32 Correct 55 ms 12136 KB Output is correct
33 Correct 52 ms 11752 KB Output is correct
34 Correct 53 ms 11964 KB Output is correct
35 Correct 4 ms 4992 KB Output is correct
36 Correct 4 ms 4992 KB Output is correct
37 Correct 57 ms 12008 KB Output is correct
38 Correct 66 ms 12008 KB Output is correct
39 Correct 56 ms 12008 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 89 ms 11376 KB Output is correct
6 Correct 74 ms 12020 KB Output is correct
7 Correct 86 ms 12656 KB Output is correct
8 Correct 61 ms 12200 KB Output is correct
9 Correct 92 ms 12784 KB Output is correct
10 Correct 91 ms 12524 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 5 ms 4992 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 4 ms 4992 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 4 ms 4992 KB Output is correct
25 Correct 4 ms 4992 KB Output is correct
26 Correct 4 ms 4992 KB Output is correct
27 Correct 4 ms 4992 KB Output is correct
28 Correct 5 ms 4992 KB Output is correct
29 Correct 4 ms 4992 KB Output is correct
30 Correct 4 ms 4992 KB Output is correct
31 Correct 4 ms 4992 KB Output is correct
32 Correct 4 ms 4992 KB Output is correct
33 Correct 4 ms 4992 KB Output is correct
34 Correct 4 ms 4992 KB Output is correct
35 Correct 4 ms 4992 KB Output is correct
36 Correct 4 ms 4992 KB Output is correct
37 Correct 4 ms 4992 KB Output is correct
38 Correct 4 ms 4992 KB Output is correct
39 Correct 4 ms 4992 KB Output is correct
40 Correct 4 ms 4992 KB Output is correct
41 Correct 5 ms 5120 KB Output is correct
42 Correct 4 ms 5120 KB Output is correct
43 Correct 5 ms 5120 KB Output is correct
44 Correct 4 ms 5120 KB Output is correct
45 Correct 4 ms 5120 KB Output is correct
46 Correct 5 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 5 ms 5120 KB Output is correct
49 Correct 4 ms 5120 KB Output is correct
50 Correct 4 ms 5120 KB Output is correct
51 Correct 4 ms 5120 KB Output is correct
52 Correct 5 ms 5120 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 5 ms 4992 KB Output is correct
9 Correct 4 ms 5120 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 4 ms 4992 KB Output is correct
23 Correct 4 ms 4992 KB Output is correct
24 Correct 4 ms 4992 KB Output is correct
25 Correct 4 ms 4992 KB Output is correct
26 Correct 4 ms 4992 KB Output is correct
27 Correct 4 ms 4992 KB Output is correct
28 Correct 5 ms 4992 KB Output is correct
29 Correct 4 ms 4992 KB Output is correct
30 Correct 4 ms 4992 KB Output is correct
31 Correct 4 ms 4992 KB Output is correct
32 Correct 4 ms 4992 KB Output is correct
33 Correct 4 ms 4992 KB Output is correct
34 Correct 4 ms 4992 KB Output is correct
35 Correct 4 ms 4992 KB Output is correct
36 Correct 4 ms 4992 KB Output is correct
37 Correct 4 ms 4992 KB Output is correct
38 Correct 4 ms 4992 KB Output is correct
39 Correct 4 ms 4992 KB Output is correct
40 Correct 4 ms 4992 KB Output is correct
41 Correct 4 ms 4992 KB Output is correct
42 Correct 4 ms 4992 KB Output is correct
43 Correct 4 ms 4992 KB Output is correct
44 Correct 4 ms 4992 KB Output is correct
45 Correct 4 ms 4992 KB Output is correct
46 Correct 4 ms 4992 KB Output is correct
47 Correct 4 ms 4992 KB Output is correct
48 Correct 4 ms 4992 KB Output is correct
49 Correct 4 ms 4992 KB Output is correct
50 Correct 4 ms 4992 KB Output is correct
51 Correct 4 ms 4992 KB Output is correct
52 Correct 5 ms 5120 KB Output is correct
53 Correct 5 ms 5120 KB Output is correct
54 Correct 10 ms 5628 KB Output is correct
55 Correct 10 ms 5628 KB Output is correct
56 Correct 64 ms 10728 KB Output is correct
57 Correct 61 ms 12008 KB Output is correct
58 Correct 68 ms 12008 KB Output is correct
59 Correct 53 ms 11880 KB Output is correct
60 Correct 65 ms 12008 KB Output is correct
61 Correct 56 ms 11752 KB Output is correct
62 Correct 53 ms 12008 KB Output is correct
63 Correct 54 ms 12040 KB Output is correct
64 Correct 54 ms 12008 KB Output is correct
65 Correct 65 ms 12008 KB Output is correct
66 Correct 55 ms 12136 KB Output is correct
67 Correct 52 ms 11752 KB Output is correct
68 Correct 53 ms 11964 KB Output is correct
69 Correct 4 ms 4992 KB Output is correct
70 Correct 4 ms 4992 KB Output is correct
71 Correct 57 ms 12008 KB Output is correct
72 Correct 66 ms 12008 KB Output is correct
73 Correct 56 ms 12008 KB Output is correct
74 Correct 4 ms 4992 KB Output is correct
75 Correct 4 ms 4992 KB Output is correct
76 Correct 4 ms 4992 KB Output is correct
77 Correct 4 ms 4992 KB Output is correct
78 Correct 89 ms 11376 KB Output is correct
79 Correct 74 ms 12020 KB Output is correct
80 Correct 86 ms 12656 KB Output is correct
81 Correct 61 ms 12200 KB Output is correct
82 Correct 92 ms 12784 KB Output is correct
83 Correct 91 ms 12524 KB Output is correct
84 Correct 4 ms 4992 KB Output is correct
85 Correct 4 ms 4992 KB Output is correct
86 Correct 4 ms 4992 KB Output is correct
87 Correct 4 ms 4992 KB Output is correct
88 Correct 5 ms 5120 KB Output is correct
89 Correct 4 ms 5120 KB Output is correct
90 Correct 5 ms 5120 KB Output is correct
91 Correct 4 ms 5120 KB Output is correct
92 Correct 4 ms 5120 KB Output is correct
93 Correct 5 ms 5120 KB Output is correct
94 Correct 4 ms 5120 KB Output is correct
95 Correct 5 ms 5120 KB Output is correct
96 Correct 4 ms 5120 KB Output is correct
97 Correct 4 ms 5120 KB Output is correct
98 Correct 4 ms 5120 KB Output is correct
99 Correct 5 ms 5120 KB Output is correct
100 Correct 4 ms 5120 KB Output is correct
101 Correct 11 ms 5888 KB Output is correct
102 Correct 11 ms 5888 KB Output is correct
103 Correct 91 ms 12656 KB Output is correct
104 Correct 79 ms 12716 KB Output is correct
105 Correct 83 ms 12140 KB Output is correct
106 Correct 78 ms 12656 KB Output is correct
107 Correct 72 ms 12016 KB Output is correct
108 Correct 73 ms 12012 KB Output is correct
109 Correct 61 ms 12008 KB Output is correct
110 Correct 59 ms 12012 KB Output is correct
111 Correct 80 ms 12784 KB Output is correct
112 Correct 88 ms 12780 KB Output is correct
113 Correct 71 ms 12012 KB Output is correct
114 Correct 84 ms 12656 KB Output is correct
115 Correct 79 ms 12656 KB Output is correct