oj.uz

Submission #227765

# Submission time Handle Problem Language Result Execution time Memory
227765 2020-04-28T16:58:05 Z Romario8 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 106 ms 20460 KB 
#include "shoes.h"
#include<bits/stdc++.h>
#define ll long long
#define rep(i,a,b) for(ll i=a;i<b;i++)
#define rrep(i,a,b) for(ll i=a;i>=b;i--)
#define pb push_back
#define rl "\n"
#define x first
#define y second
using namespace std;
int BIT[200001];
ll sum(int i)
{
    ll res=0;
    while(i>0)
    {
        res+=BIT[i];
        i-=i&-i;
    }
    return res;
}
void update(int i,ll n,int val)
{
    while(i<=n)
    {
        BIT[i]+=val;
        i+=i&-i;
    }
}
long long count_swaps(vector<int> s)
{
    ll ans=0;
    ll n=s.size();
    vector<vector<ll>> pr(2*n+1);
    ll k=0;
    rep(i,0,n)
    {
        pr[s[i]+n/2].pb(i+1);
    }
	vector<pair<int,int>> u;
	rep(i,1,n+1)
	{
	    rep(j,0,pr[i+n/2].size())
	    {
            u.pb(make_pair(min(pr[i+n/2][j],pr[-i+n/2][j]),max(pr[i+n/2][j],pr[-i+n/2][j])));
            if(pr[i+n/2][j]<pr[-i+n/2][j])ans++;
	    }
	}
	sort(u.begin(),u.end());
	rep(i,0,u.size())
	{
        int l=u[i].x;
        int r=u[i].y;
        ans+=r-l-1-(sum(l)-sum(r));
        update(l+1,n,1);
        update(r,n,-1);
	}
	return ans;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:4:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(ll i=a;i<b;i++)
shoes.cpp:43:10:
      rep(j,0,pr[i+n/2].size())
          ~~~~~~~~~~~~~~~~~~~~   
shoes.cpp:43:6: note: in expansion of macro 'rep'
      rep(j,0,pr[i+n/2].size())
      ^~~
shoes.cpp:4:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define rep(i,a,b) for(ll i=a;i<b;i++)
shoes.cpp:50:6:
  rep(i,0,u.size())
      ~~~~~~~~~~~~               
shoes.cpp:50:2: note: in expansion of macro 'rep'
  rep(i,0,u.size())
  ^~~
shoes.cpp:35:8: warning: unused variable 'k' [-Wunused-variable]
     ll k=0;
        ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 4 ms 256 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 4 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 4 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 5 ms 256 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 4 ms 256 KB Output is correct
25 Correct 4 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 4 ms 256 KB Output is correct
29 Correct 4 ms 256 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 4 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 4 ms 256 KB Output is correct
34 Correct 4 ms 256 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 4 ms 256 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 4 ms 256 KB Output is correct
8 Correct 4 ms 256 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 4 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 4 ms 384 KB Output is correct
15 Correct 5 ms 288 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 512 KB Output is correct
19 Correct 5 ms 512 KB Output is correct
20 Correct 9 ms 2048 KB Output is correct
21 Correct 9 ms 1992 KB Output is correct
22 Correct 54 ms 15844 KB Output is correct
23 Correct 53 ms 15844 KB Output is correct
24 Correct 55 ms 15752 KB Output is correct
25 Correct 51 ms 15596 KB Output is correct
26 Correct 53 ms 15844 KB Output is correct
27 Correct 51 ms 15588 KB Output is correct
28 Correct 52 ms 15852 KB Output is correct
29 Correct 52 ms 15852 KB Output is correct
30 Correct 51 ms 15852 KB Output is correct
31 Correct 54 ms 15864 KB Output is correct
32 Correct 53 ms 15852 KB Output is correct
33 Correct 50 ms 15596 KB Output is correct
34 Correct 51 ms 15852 KB Output is correct
35 Correct 5 ms 256 KB Output is correct
36 Correct 4 ms 256 KB Output is correct
37 Correct 52 ms 15852 KB Output is correct
38 Correct 52 ms 15852 KB Output is correct
39 Correct 52 ms 15852 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 4 ms 256 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 88 ms 20460 KB Output is correct
6 Correct 75 ms 16880 KB Output is correct
7 Correct 90 ms 20460 KB Output is correct
8 Correct 56 ms 16300 KB Output is correct
9 Correct 89 ms 20460 KB Output is correct
10 Correct 85 ms 17772 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 4 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 4 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 5 ms 256 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 4 ms 256 KB Output is correct
25 Correct 4 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 4 ms 256 KB Output is correct
29 Correct 4 ms 256 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 4 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 4 ms 256 KB Output is correct
34 Correct 4 ms 256 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 4 ms 256 KB Output is correct
37 Correct 4 ms 256 KB Output is correct
38 Correct 4 ms 256 KB Output is correct
39 Correct 5 ms 384 KB Output is correct
40 Correct 5 ms 384 KB Output is correct
41 Correct 5 ms 512 KB Output is correct
42 Correct 5 ms 512 KB Output is correct
43 Correct 5 ms 512 KB Output is correct
44 Correct 5 ms 512 KB Output is correct
45 Correct 5 ms 512 KB Output is correct
46 Correct 5 ms 512 KB Output is correct
47 Correct 5 ms 512 KB Output is correct
48 Correct 5 ms 512 KB Output is correct
49 Correct 5 ms 512 KB Output is correct
50 Correct 5 ms 516 KB Output is correct
51 Correct 5 ms 512 KB Output is correct
52 Correct 5 ms 512 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 4 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 4 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 4 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 5 ms 256 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 4 ms 256 KB Output is correct
25 Correct 4 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 4 ms 256 KB Output is correct
29 Correct 4 ms 256 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 4 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 4 ms 256 KB Output is correct
34 Correct 4 ms 256 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 4 ms 256 KB Output is correct
37 Correct 5 ms 256 KB Output is correct
38 Correct 4 ms 256 KB Output is correct
39 Correct 5 ms 384 KB Output is correct
40 Correct 5 ms 384 KB Output is correct
41 Correct 4 ms 256 KB Output is correct
42 Correct 4 ms 256 KB Output is correct
43 Correct 5 ms 256 KB Output is correct
44 Correct 4 ms 256 KB Output is correct
45 Correct 4 ms 256 KB Output is correct
46 Correct 5 ms 256 KB Output is correct
47 Correct 5 ms 256 KB Output is correct
48 Correct 4 ms 384 KB Output is correct
49 Correct 5 ms 288 KB Output is correct
50 Correct 5 ms 384 KB Output is correct
51 Correct 5 ms 384 KB Output is correct
52 Correct 5 ms 512 KB Output is correct
53 Correct 5 ms 512 KB Output is correct
54 Correct 9 ms 2048 KB Output is correct
55 Correct 9 ms 1992 KB Output is correct
56 Correct 54 ms 15844 KB Output is correct
57 Correct 53 ms 15844 KB Output is correct
58 Correct 55 ms 15752 KB Output is correct
59 Correct 51 ms 15596 KB Output is correct
60 Correct 53 ms 15844 KB Output is correct
61 Correct 51 ms 15588 KB Output is correct
62 Correct 52 ms 15852 KB Output is correct
63 Correct 52 ms 15852 KB Output is correct
64 Correct 51 ms 15852 KB Output is correct
65 Correct 54 ms 15864 KB Output is correct
66 Correct 53 ms 15852 KB Output is correct
67 Correct 50 ms 15596 KB Output is correct
68 Correct 51 ms 15852 KB Output is correct
69 Correct 5 ms 256 KB Output is correct
70 Correct 4 ms 256 KB Output is correct
71 Correct 52 ms 15852 KB Output is correct
72 Correct 52 ms 15852 KB Output is correct
73 Correct 52 ms 15852 KB Output is correct
74 Correct 5 ms 256 KB Output is correct
75 Correct 4 ms 256 KB Output is correct
76 Correct 4 ms 256 KB Output is correct
77 Correct 4 ms 256 KB Output is correct
78 Correct 88 ms 20460 KB Output is correct
79 Correct 75 ms 16880 KB Output is correct
80 Correct 90 ms 20460 KB Output is correct
81 Correct 56 ms 16300 KB Output is correct
82 Correct 89 ms 20460 KB Output is correct
83 Correct 85 ms 17772 KB Output is correct
84 Correct 4 ms 256 KB Output is correct
85 Correct 4 ms 256 KB Output is correct
86 Correct 5 ms 384 KB Output is correct
87 Correct 5 ms 384 KB Output is correct
88 Correct 5 ms 512 KB Output is correct
89 Correct 5 ms 512 KB Output is correct
90 Correct 5 ms 512 KB Output is correct
91 Correct 5 ms 512 KB Output is correct
92 Correct 5 ms 512 KB Output is correct
93 Correct 5 ms 512 KB Output is correct
94 Correct 5 ms 512 KB Output is correct
95 Correct 5 ms 512 KB Output is correct
96 Correct 5 ms 512 KB Output is correct
97 Correct 5 ms 516 KB Output is correct
98 Correct 5 ms 512 KB Output is correct
99 Correct 5 ms 512 KB Output is correct
100 Correct 5 ms 512 KB Output is correct
101 Correct 12 ms 2432 KB Output is correct
102 Correct 12 ms 2048 KB Output is correct
103 Correct 99 ms 20460 KB Output is correct
104 Correct 106 ms 20460 KB Output is correct
105 Correct 94 ms 18156 KB Output is correct
106 Correct 89 ms 20460 KB Output is correct
107 Correct 75 ms 16876 KB Output is correct
108 Correct 78 ms 17132 KB Output is correct
109 Correct 57 ms 16880 KB Output is correct
110 Correct 50 ms 15852 KB Output is correct
111 Correct 85 ms 19820 KB Output is correct
112 Correct 94 ms 19164 KB Output is correct
113 Correct 74 ms 16876 KB Output is correct
114 Correct 94 ms 20460 KB Output is correct
115 Correct 86 ms 20460 KB Output is correct