#include "shoes.h"
#include <iostream>
#include <algorithm>
#include <fstream>
#include <vector>
#include <deque>
#include <assert.h>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <stdio.h>
#include <string.h>
#include <utility>
#include <math.h>
#include <bitset>
#include <iomanip>
#include <complex>
using namespace std;
//#define int long long
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef long double ld;
typedef long long ll;
#define X first
#define Y second
#define all(o) o.begin(), o.end()
#define endl '\n'
#define IOS ios::sync_with_stdio(0), cin.tie(0)
const int maxn = 2e5 + 10;
vi lef[maxn], rig[maxn];
int a[maxn], b[maxn], fen[maxn];
void add(int p,int val){
for(p++; p<maxn; p+=p&-p)
fen[p] += val;
}
int get(int p){
int res = 0;
for(; p; p-=p&-p)
res += fen[p];
return res;
}
long long count_swaps(vi s) {
int n = s.size() / 2;
for(int i=0; i<2*n; i++)
a[i] = s[i];
for(int i=0; i<2*n; i++){
int sz = abs(a[i]);
if(a[i] < 0)
lef[sz].push_back(i);
else
rig[sz].push_back(i);
}
vector<pair<int,pii> > tot;
for(int i=1; i<=n; i++){
for(int j=0; j<lef[i].size(); j++){
tot.push_back({ lef[i][j] + rig[i][j], {i, j} });
}
}
sort(all(tot));
ll ans = 0;
int cur = 0;
for(auto t : tot){
int i = t.Y.X;
int j = t.Y.Y;
int l = lef[i][j], r = rig[i][j];
b[l] = cur;
b[r] = cur + 1;
cur += 2;
}
for(int i=2*n-1; i>=0; i--){
int x = b[i];
ans += get(x);
add(x, 1);
}
return ans;
}/*
int main(){
int n;
cin >> n;
vi s;
for(int i=0; i<2*n; i++){
int x;
cin >> x;
s.push_back(x);
}
cout << count_swaps(s) << endl;
}*/
Compilation message
shoes.cpp: In function 'long long int count_swaps(vi)':
shoes.cpp:57:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int j=0; j<lef[i].size(); j++){
~^~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
3 |
Correct |
10 ms |
9720 KB |
Output is correct |
4 |
Correct |
10 ms |
9720 KB |
Output is correct |
5 |
Correct |
10 ms |
9720 KB |
Output is correct |
6 |
Correct |
10 ms |
9848 KB |
Output is correct |
7 |
Correct |
10 ms |
9720 KB |
Output is correct |
8 |
Correct |
10 ms |
9720 KB |
Output is correct |
9 |
Correct |
11 ms |
9720 KB |
Output is correct |
10 |
Correct |
10 ms |
9720 KB |
Output is correct |
11 |
Correct |
10 ms |
9720 KB |
Output is correct |
12 |
Correct |
11 ms |
9720 KB |
Output is correct |
13 |
Correct |
11 ms |
9720 KB |
Output is correct |
14 |
Correct |
11 ms |
9720 KB |
Output is correct |
15 |
Correct |
10 ms |
9720 KB |
Output is correct |
16 |
Correct |
10 ms |
9716 KB |
Output is correct |
17 |
Correct |
10 ms |
9720 KB |
Output is correct |
18 |
Correct |
10 ms |
9720 KB |
Output is correct |
19 |
Correct |
10 ms |
9720 KB |
Output is correct |
20 |
Correct |
10 ms |
9720 KB |
Output is correct |
21 |
Correct |
10 ms |
9720 KB |
Output is correct |
22 |
Correct |
10 ms |
9720 KB |
Output is correct |
23 |
Correct |
10 ms |
9720 KB |
Output is correct |
24 |
Correct |
11 ms |
9720 KB |
Output is correct |
25 |
Correct |
10 ms |
9720 KB |
Output is correct |
26 |
Correct |
10 ms |
9720 KB |
Output is correct |
27 |
Correct |
10 ms |
9720 KB |
Output is correct |
28 |
Correct |
10 ms |
9848 KB |
Output is correct |
29 |
Correct |
10 ms |
9720 KB |
Output is correct |
30 |
Correct |
10 ms |
9720 KB |
Output is correct |
31 |
Correct |
10 ms |
9712 KB |
Output is correct |
32 |
Correct |
10 ms |
9720 KB |
Output is correct |
33 |
Correct |
10 ms |
9720 KB |
Output is correct |
34 |
Correct |
10 ms |
9720 KB |
Output is correct |
35 |
Correct |
10 ms |
9768 KB |
Output is correct |
36 |
Correct |
10 ms |
9720 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
3 |
Correct |
10 ms |
9720 KB |
Output is correct |
4 |
Correct |
10 ms |
9724 KB |
Output is correct |
5 |
Correct |
10 ms |
9720 KB |
Output is correct |
6 |
Correct |
10 ms |
9720 KB |
Output is correct |
7 |
Correct |
10 ms |
9720 KB |
Output is correct |
8 |
Correct |
10 ms |
9720 KB |
Output is correct |
9 |
Correct |
10 ms |
9720 KB |
Output is correct |
10 |
Correct |
10 ms |
9768 KB |
Output is correct |
11 |
Correct |
11 ms |
9788 KB |
Output is correct |
12 |
Correct |
10 ms |
9692 KB |
Output is correct |
13 |
Correct |
10 ms |
9720 KB |
Output is correct |
14 |
Correct |
10 ms |
9720 KB |
Output is correct |
15 |
Correct |
10 ms |
9720 KB |
Output is correct |
16 |
Correct |
10 ms |
9720 KB |
Output is correct |
17 |
Correct |
10 ms |
9720 KB |
Output is correct |
18 |
Correct |
13 ms |
9848 KB |
Output is correct |
19 |
Correct |
10 ms |
9848 KB |
Output is correct |
20 |
Correct |
15 ms |
10564 KB |
Output is correct |
21 |
Correct |
17 ms |
10556 KB |
Output is correct |
22 |
Correct |
59 ms |
15888 KB |
Output is correct |
23 |
Correct |
56 ms |
15908 KB |
Output is correct |
24 |
Correct |
55 ms |
16004 KB |
Output is correct |
25 |
Correct |
50 ms |
16020 KB |
Output is correct |
26 |
Correct |
54 ms |
15908 KB |
Output is correct |
27 |
Correct |
49 ms |
15944 KB |
Output is correct |
28 |
Correct |
51 ms |
15916 KB |
Output is correct |
29 |
Correct |
50 ms |
15952 KB |
Output is correct |
30 |
Correct |
53 ms |
15972 KB |
Output is correct |
31 |
Correct |
55 ms |
15932 KB |
Output is correct |
32 |
Correct |
50 ms |
15976 KB |
Output is correct |
33 |
Correct |
50 ms |
15988 KB |
Output is correct |
34 |
Correct |
51 ms |
15944 KB |
Output is correct |
35 |
Correct |
10 ms |
9724 KB |
Output is correct |
36 |
Correct |
10 ms |
9728 KB |
Output is correct |
37 |
Correct |
51 ms |
16016 KB |
Output is correct |
38 |
Correct |
55 ms |
15912 KB |
Output is correct |
39 |
Correct |
56 ms |
15904 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
9696 KB |
Output is correct |
2 |
Correct |
12 ms |
9692 KB |
Output is correct |
3 |
Correct |
11 ms |
9724 KB |
Output is correct |
4 |
Correct |
11 ms |
9784 KB |
Output is correct |
5 |
Correct |
107 ms |
21180 KB |
Output is correct |
6 |
Correct |
82 ms |
16364 KB |
Output is correct |
7 |
Correct |
105 ms |
21232 KB |
Output is correct |
8 |
Correct |
58 ms |
15824 KB |
Output is correct |
9 |
Correct |
107 ms |
21164 KB |
Output is correct |
10 |
Correct |
106 ms |
18092 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
3 |
Correct |
10 ms |
9720 KB |
Output is correct |
4 |
Correct |
10 ms |
9720 KB |
Output is correct |
5 |
Correct |
10 ms |
9720 KB |
Output is correct |
6 |
Correct |
10 ms |
9848 KB |
Output is correct |
7 |
Correct |
10 ms |
9720 KB |
Output is correct |
8 |
Correct |
10 ms |
9720 KB |
Output is correct |
9 |
Correct |
11 ms |
9720 KB |
Output is correct |
10 |
Correct |
10 ms |
9720 KB |
Output is correct |
11 |
Correct |
10 ms |
9720 KB |
Output is correct |
12 |
Correct |
11 ms |
9720 KB |
Output is correct |
13 |
Correct |
11 ms |
9720 KB |
Output is correct |
14 |
Correct |
11 ms |
9720 KB |
Output is correct |
15 |
Correct |
10 ms |
9720 KB |
Output is correct |
16 |
Correct |
10 ms |
9716 KB |
Output is correct |
17 |
Correct |
10 ms |
9720 KB |
Output is correct |
18 |
Correct |
10 ms |
9720 KB |
Output is correct |
19 |
Correct |
10 ms |
9720 KB |
Output is correct |
20 |
Correct |
10 ms |
9720 KB |
Output is correct |
21 |
Correct |
10 ms |
9720 KB |
Output is correct |
22 |
Correct |
10 ms |
9720 KB |
Output is correct |
23 |
Correct |
10 ms |
9720 KB |
Output is correct |
24 |
Correct |
11 ms |
9720 KB |
Output is correct |
25 |
Correct |
10 ms |
9720 KB |
Output is correct |
26 |
Correct |
10 ms |
9720 KB |
Output is correct |
27 |
Correct |
10 ms |
9720 KB |
Output is correct |
28 |
Correct |
10 ms |
9848 KB |
Output is correct |
29 |
Correct |
10 ms |
9720 KB |
Output is correct |
30 |
Correct |
10 ms |
9720 KB |
Output is correct |
31 |
Correct |
10 ms |
9712 KB |
Output is correct |
32 |
Correct |
10 ms |
9720 KB |
Output is correct |
33 |
Correct |
10 ms |
9720 KB |
Output is correct |
34 |
Correct |
10 ms |
9720 KB |
Output is correct |
35 |
Correct |
10 ms |
9768 KB |
Output is correct |
36 |
Correct |
10 ms |
9720 KB |
Output is correct |
37 |
Correct |
11 ms |
9720 KB |
Output is correct |
38 |
Correct |
11 ms |
9720 KB |
Output is correct |
39 |
Correct |
10 ms |
9720 KB |
Output is correct |
40 |
Correct |
10 ms |
9780 KB |
Output is correct |
41 |
Correct |
11 ms |
9848 KB |
Output is correct |
42 |
Correct |
11 ms |
9848 KB |
Output is correct |
43 |
Correct |
13 ms |
9848 KB |
Output is correct |
44 |
Correct |
11 ms |
9848 KB |
Output is correct |
45 |
Correct |
11 ms |
9848 KB |
Output is correct |
46 |
Correct |
11 ms |
9848 KB |
Output is correct |
47 |
Correct |
11 ms |
9760 KB |
Output is correct |
48 |
Correct |
11 ms |
9848 KB |
Output is correct |
49 |
Correct |
11 ms |
9848 KB |
Output is correct |
50 |
Correct |
11 ms |
9848 KB |
Output is correct |
51 |
Correct |
11 ms |
9848 KB |
Output is correct |
52 |
Correct |
11 ms |
9848 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
9720 KB |
Output is correct |
2 |
Correct |
10 ms |
9720 KB |
Output is correct |
3 |
Correct |
10 ms |
9720 KB |
Output is correct |
4 |
Correct |
10 ms |
9720 KB |
Output is correct |
5 |
Correct |
10 ms |
9720 KB |
Output is correct |
6 |
Correct |
10 ms |
9848 KB |
Output is correct |
7 |
Correct |
10 ms |
9720 KB |
Output is correct |
8 |
Correct |
10 ms |
9720 KB |
Output is correct |
9 |
Correct |
11 ms |
9720 KB |
Output is correct |
10 |
Correct |
10 ms |
9720 KB |
Output is correct |
11 |
Correct |
10 ms |
9720 KB |
Output is correct |
12 |
Correct |
11 ms |
9720 KB |
Output is correct |
13 |
Correct |
11 ms |
9720 KB |
Output is correct |
14 |
Correct |
11 ms |
9720 KB |
Output is correct |
15 |
Correct |
10 ms |
9720 KB |
Output is correct |
16 |
Correct |
10 ms |
9716 KB |
Output is correct |
17 |
Correct |
10 ms |
9720 KB |
Output is correct |
18 |
Correct |
10 ms |
9720 KB |
Output is correct |
19 |
Correct |
10 ms |
9720 KB |
Output is correct |
20 |
Correct |
10 ms |
9720 KB |
Output is correct |
21 |
Correct |
10 ms |
9720 KB |
Output is correct |
22 |
Correct |
10 ms |
9720 KB |
Output is correct |
23 |
Correct |
10 ms |
9720 KB |
Output is correct |
24 |
Correct |
11 ms |
9720 KB |
Output is correct |
25 |
Correct |
10 ms |
9720 KB |
Output is correct |
26 |
Correct |
10 ms |
9720 KB |
Output is correct |
27 |
Correct |
10 ms |
9720 KB |
Output is correct |
28 |
Correct |
10 ms |
9848 KB |
Output is correct |
29 |
Correct |
10 ms |
9720 KB |
Output is correct |
30 |
Correct |
10 ms |
9720 KB |
Output is correct |
31 |
Correct |
10 ms |
9712 KB |
Output is correct |
32 |
Correct |
10 ms |
9720 KB |
Output is correct |
33 |
Correct |
10 ms |
9720 KB |
Output is correct |
34 |
Correct |
10 ms |
9720 KB |
Output is correct |
35 |
Correct |
10 ms |
9768 KB |
Output is correct |
36 |
Correct |
10 ms |
9720 KB |
Output is correct |
37 |
Correct |
10 ms |
9720 KB |
Output is correct |
38 |
Correct |
10 ms |
9724 KB |
Output is correct |
39 |
Correct |
10 ms |
9720 KB |
Output is correct |
40 |
Correct |
10 ms |
9720 KB |
Output is correct |
41 |
Correct |
10 ms |
9720 KB |
Output is correct |
42 |
Correct |
10 ms |
9720 KB |
Output is correct |
43 |
Correct |
10 ms |
9720 KB |
Output is correct |
44 |
Correct |
10 ms |
9768 KB |
Output is correct |
45 |
Correct |
11 ms |
9788 KB |
Output is correct |
46 |
Correct |
10 ms |
9692 KB |
Output is correct |
47 |
Correct |
10 ms |
9720 KB |
Output is correct |
48 |
Correct |
10 ms |
9720 KB |
Output is correct |
49 |
Correct |
10 ms |
9720 KB |
Output is correct |
50 |
Correct |
10 ms |
9720 KB |
Output is correct |
51 |
Correct |
10 ms |
9720 KB |
Output is correct |
52 |
Correct |
13 ms |
9848 KB |
Output is correct |
53 |
Correct |
10 ms |
9848 KB |
Output is correct |
54 |
Correct |
15 ms |
10564 KB |
Output is correct |
55 |
Correct |
17 ms |
10556 KB |
Output is correct |
56 |
Correct |
59 ms |
15888 KB |
Output is correct |
57 |
Correct |
56 ms |
15908 KB |
Output is correct |
58 |
Correct |
55 ms |
16004 KB |
Output is correct |
59 |
Correct |
50 ms |
16020 KB |
Output is correct |
60 |
Correct |
54 ms |
15908 KB |
Output is correct |
61 |
Correct |
49 ms |
15944 KB |
Output is correct |
62 |
Correct |
51 ms |
15916 KB |
Output is correct |
63 |
Correct |
50 ms |
15952 KB |
Output is correct |
64 |
Correct |
53 ms |
15972 KB |
Output is correct |
65 |
Correct |
55 ms |
15932 KB |
Output is correct |
66 |
Correct |
50 ms |
15976 KB |
Output is correct |
67 |
Correct |
50 ms |
15988 KB |
Output is correct |
68 |
Correct |
51 ms |
15944 KB |
Output is correct |
69 |
Correct |
10 ms |
9724 KB |
Output is correct |
70 |
Correct |
10 ms |
9728 KB |
Output is correct |
71 |
Correct |
51 ms |
16016 KB |
Output is correct |
72 |
Correct |
55 ms |
15912 KB |
Output is correct |
73 |
Correct |
56 ms |
15904 KB |
Output is correct |
74 |
Correct |
10 ms |
9696 KB |
Output is correct |
75 |
Correct |
12 ms |
9692 KB |
Output is correct |
76 |
Correct |
11 ms |
9724 KB |
Output is correct |
77 |
Correct |
11 ms |
9784 KB |
Output is correct |
78 |
Correct |
107 ms |
21180 KB |
Output is correct |
79 |
Correct |
82 ms |
16364 KB |
Output is correct |
80 |
Correct |
105 ms |
21232 KB |
Output is correct |
81 |
Correct |
58 ms |
15824 KB |
Output is correct |
82 |
Correct |
107 ms |
21164 KB |
Output is correct |
83 |
Correct |
106 ms |
18092 KB |
Output is correct |
84 |
Correct |
11 ms |
9720 KB |
Output is correct |
85 |
Correct |
11 ms |
9720 KB |
Output is correct |
86 |
Correct |
10 ms |
9720 KB |
Output is correct |
87 |
Correct |
10 ms |
9780 KB |
Output is correct |
88 |
Correct |
11 ms |
9848 KB |
Output is correct |
89 |
Correct |
11 ms |
9848 KB |
Output is correct |
90 |
Correct |
13 ms |
9848 KB |
Output is correct |
91 |
Correct |
11 ms |
9848 KB |
Output is correct |
92 |
Correct |
11 ms |
9848 KB |
Output is correct |
93 |
Correct |
11 ms |
9848 KB |
Output is correct |
94 |
Correct |
11 ms |
9760 KB |
Output is correct |
95 |
Correct |
11 ms |
9848 KB |
Output is correct |
96 |
Correct |
11 ms |
9848 KB |
Output is correct |
97 |
Correct |
11 ms |
9848 KB |
Output is correct |
98 |
Correct |
11 ms |
9848 KB |
Output is correct |
99 |
Correct |
11 ms |
9848 KB |
Output is correct |
100 |
Correct |
11 ms |
9848 KB |
Output is correct |
101 |
Correct |
19 ms |
11036 KB |
Output is correct |
102 |
Correct |
18 ms |
10552 KB |
Output is correct |
103 |
Correct |
129 ms |
21228 KB |
Output is correct |
104 |
Correct |
117 ms |
21220 KB |
Output is correct |
105 |
Correct |
126 ms |
18528 KB |
Output is correct |
106 |
Correct |
103 ms |
21168 KB |
Output is correct |
107 |
Correct |
91 ms |
16580 KB |
Output is correct |
108 |
Correct |
92 ms |
16872 KB |
Output is correct |
109 |
Correct |
60 ms |
16076 KB |
Output is correct |
110 |
Correct |
51 ms |
16024 KB |
Output is correct |
111 |
Correct |
105 ms |
20524 KB |
Output is correct |
112 |
Correct |
126 ms |
19816 KB |
Output is correct |
113 |
Correct |
90 ms |
16556 KB |
Output is correct |
114 |
Correct |
100 ms |
21200 KB |
Output is correct |
115 |
Correct |
105 ms |
21164 KB |
Output is correct |