#include<bits/stdc++.h>
//#include<shoes.h>
using namespace std;
const int NAX = 1e5 + 5;
const int l = 1e5 + 5;
int N;
// fenwick tree to count range sums (+0 , +1 , +2)
int f[2 * NAX + 1];
void update(int idx , int u){
++idx;
while(idx <= N){
f[idx] += u;
idx += idx & (-idx);
}
}
long long sum(int idx){
long long sum = 0;
++idx;
while(idx){
sum += f[idx];
idx -= idx & (-idx);
}
return sum;
}
queue<int> q[2 * NAX + 200];
long long count_swaps(vector<int> S){
N = S.size();
long long ans = 0;
// update BIT
for(int i = 0; i < N; ++i){
update(i , 1);
}
for(int i = 0; i < N; ++i){
int x = abs(S[i]);
int k = S[i];
if(!q[k + l].empty()){
ans += (sum(i) - sum(q[k + l].front()));
if(k > 0){
--ans;
update(i , -1);
update(q[k + l].front() + 1 , 1);
q[k + l].pop();
} else {
update(i , -1);
update(q[k + l].front() , 1);
q[k + l].pop();
}
} else {
// q[k * -1 + l] because its opposite is the same as the next x
// k * -1 + l == next_x(k + l)
q[k * -1 + l].push(i);
}
}
return ans;
}
Compilation message
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:40:13: warning: unused variable 'x' [-Wunused-variable]
int x = abs(S[i]);
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
136 ms |
135160 KB |
Output is correct |
2 |
Correct |
136 ms |
135084 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
136 ms |
135160 KB |
Output is correct |
2 |
Correct |
136 ms |
135084 KB |
Output is correct |
3 |
Correct |
141 ms |
135064 KB |
Output is correct |
4 |
Correct |
137 ms |
135128 KB |
Output is correct |
5 |
Correct |
169 ms |
135032 KB |
Output is correct |
6 |
Correct |
153 ms |
135124 KB |
Output is correct |
7 |
Correct |
135 ms |
135020 KB |
Output is correct |
8 |
Correct |
143 ms |
135064 KB |
Output is correct |
9 |
Correct |
150 ms |
135316 KB |
Output is correct |
10 |
Correct |
158 ms |
135076 KB |
Output is correct |
11 |
Correct |
137 ms |
135032 KB |
Output is correct |
12 |
Correct |
164 ms |
135032 KB |
Output is correct |
13 |
Correct |
154 ms |
135048 KB |
Output is correct |
14 |
Correct |
134 ms |
135164 KB |
Output is correct |
15 |
Correct |
135 ms |
135224 KB |
Output is correct |
16 |
Correct |
136 ms |
135132 KB |
Output is correct |
17 |
Correct |
149 ms |
135076 KB |
Output is correct |
18 |
Correct |
155 ms |
135268 KB |
Output is correct |
19 |
Correct |
138 ms |
135160 KB |
Output is correct |
20 |
Correct |
134 ms |
135032 KB |
Output is correct |
21 |
Correct |
133 ms |
135160 KB |
Output is correct |
22 |
Correct |
134 ms |
135160 KB |
Output is correct |
23 |
Correct |
134 ms |
135148 KB |
Output is correct |
24 |
Correct |
135 ms |
135032 KB |
Output is correct |
25 |
Correct |
134 ms |
135160 KB |
Output is correct |
26 |
Correct |
133 ms |
135068 KB |
Output is correct |
27 |
Correct |
132 ms |
135132 KB |
Output is correct |
28 |
Correct |
133 ms |
135032 KB |
Output is correct |
29 |
Correct |
134 ms |
135032 KB |
Output is correct |
30 |
Correct |
134 ms |
135160 KB |
Output is correct |
31 |
Correct |
134 ms |
135148 KB |
Output is correct |
32 |
Correct |
133 ms |
135160 KB |
Output is correct |
33 |
Correct |
134 ms |
135052 KB |
Output is correct |
34 |
Correct |
134 ms |
135036 KB |
Output is correct |
35 |
Correct |
134 ms |
135032 KB |
Output is correct |
36 |
Correct |
133 ms |
135016 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
136 ms |
135160 KB |
Output is correct |
2 |
Correct |
136 ms |
135084 KB |
Output is correct |
3 |
Correct |
135 ms |
135052 KB |
Output is correct |
4 |
Correct |
133 ms |
135108 KB |
Output is correct |
5 |
Correct |
135 ms |
135168 KB |
Output is correct |
6 |
Correct |
135 ms |
135272 KB |
Output is correct |
7 |
Correct |
133 ms |
135164 KB |
Output is correct |
8 |
Correct |
134 ms |
135160 KB |
Output is correct |
9 |
Correct |
132 ms |
135072 KB |
Output is correct |
10 |
Correct |
133 ms |
135132 KB |
Output is correct |
11 |
Correct |
132 ms |
135100 KB |
Output is correct |
12 |
Correct |
134 ms |
135056 KB |
Output is correct |
13 |
Correct |
134 ms |
135032 KB |
Output is correct |
14 |
Correct |
134 ms |
135104 KB |
Output is correct |
15 |
Correct |
135 ms |
135032 KB |
Output is correct |
16 |
Correct |
135 ms |
135032 KB |
Output is correct |
17 |
Correct |
139 ms |
135160 KB |
Output is correct |
18 |
Correct |
138 ms |
135160 KB |
Output is correct |
19 |
Correct |
140 ms |
135192 KB |
Output is correct |
20 |
Correct |
142 ms |
135416 KB |
Output is correct |
21 |
Correct |
141 ms |
135416 KB |
Output is correct |
22 |
Correct |
179 ms |
137568 KB |
Output is correct |
23 |
Correct |
173 ms |
137716 KB |
Output is correct |
24 |
Correct |
182 ms |
137592 KB |
Output is correct |
25 |
Correct |
177 ms |
138020 KB |
Output is correct |
26 |
Correct |
189 ms |
138744 KB |
Output is correct |
27 |
Correct |
184 ms |
138696 KB |
Output is correct |
28 |
Correct |
187 ms |
139100 KB |
Output is correct |
29 |
Correct |
179 ms |
139188 KB |
Output is correct |
30 |
Correct |
182 ms |
139128 KB |
Output is correct |
31 |
Correct |
185 ms |
138792 KB |
Output is correct |
32 |
Correct |
175 ms |
139128 KB |
Output is correct |
33 |
Correct |
176 ms |
139000 KB |
Output is correct |
34 |
Correct |
180 ms |
139164 KB |
Output is correct |
35 |
Correct |
135 ms |
135100 KB |
Output is correct |
36 |
Correct |
133 ms |
135164 KB |
Output is correct |
37 |
Correct |
174 ms |
139128 KB |
Output is correct |
38 |
Correct |
177 ms |
139128 KB |
Output is correct |
39 |
Correct |
175 ms |
139132 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
134 ms |
135032 KB |
Output is correct |
2 |
Correct |
141 ms |
135120 KB |
Output is correct |
3 |
Correct |
134 ms |
135160 KB |
Output is correct |
4 |
Correct |
147 ms |
135164 KB |
Output is correct |
5 |
Correct |
207 ms |
137716 KB |
Output is correct |
6 |
Correct |
189 ms |
138744 KB |
Output is correct |
7 |
Correct |
210 ms |
138744 KB |
Output is correct |
8 |
Correct |
180 ms |
139144 KB |
Output is correct |
9 |
Correct |
208 ms |
138656 KB |
Output is correct |
10 |
Correct |
197 ms |
138616 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
136 ms |
135160 KB |
Output is correct |
2 |
Correct |
136 ms |
135084 KB |
Output is correct |
3 |
Correct |
141 ms |
135064 KB |
Output is correct |
4 |
Correct |
137 ms |
135128 KB |
Output is correct |
5 |
Correct |
169 ms |
135032 KB |
Output is correct |
6 |
Correct |
153 ms |
135124 KB |
Output is correct |
7 |
Correct |
135 ms |
135020 KB |
Output is correct |
8 |
Correct |
143 ms |
135064 KB |
Output is correct |
9 |
Correct |
150 ms |
135316 KB |
Output is correct |
10 |
Correct |
158 ms |
135076 KB |
Output is correct |
11 |
Correct |
137 ms |
135032 KB |
Output is correct |
12 |
Correct |
164 ms |
135032 KB |
Output is correct |
13 |
Correct |
154 ms |
135048 KB |
Output is correct |
14 |
Correct |
134 ms |
135164 KB |
Output is correct |
15 |
Correct |
135 ms |
135224 KB |
Output is correct |
16 |
Correct |
136 ms |
135132 KB |
Output is correct |
17 |
Correct |
149 ms |
135076 KB |
Output is correct |
18 |
Correct |
155 ms |
135268 KB |
Output is correct |
19 |
Correct |
138 ms |
135160 KB |
Output is correct |
20 |
Correct |
134 ms |
135032 KB |
Output is correct |
21 |
Correct |
133 ms |
135160 KB |
Output is correct |
22 |
Correct |
134 ms |
135160 KB |
Output is correct |
23 |
Correct |
134 ms |
135148 KB |
Output is correct |
24 |
Correct |
135 ms |
135032 KB |
Output is correct |
25 |
Correct |
134 ms |
135160 KB |
Output is correct |
26 |
Correct |
133 ms |
135068 KB |
Output is correct |
27 |
Correct |
132 ms |
135132 KB |
Output is correct |
28 |
Correct |
133 ms |
135032 KB |
Output is correct |
29 |
Correct |
134 ms |
135032 KB |
Output is correct |
30 |
Correct |
134 ms |
135160 KB |
Output is correct |
31 |
Correct |
134 ms |
135148 KB |
Output is correct |
32 |
Correct |
133 ms |
135160 KB |
Output is correct |
33 |
Correct |
134 ms |
135052 KB |
Output is correct |
34 |
Correct |
134 ms |
135036 KB |
Output is correct |
35 |
Correct |
134 ms |
135032 KB |
Output is correct |
36 |
Correct |
133 ms |
135016 KB |
Output is correct |
37 |
Correct |
152 ms |
135148 KB |
Output is correct |
38 |
Correct |
140 ms |
135092 KB |
Output is correct |
39 |
Correct |
134 ms |
135132 KB |
Output is correct |
40 |
Correct |
140 ms |
135032 KB |
Output is correct |
41 |
Correct |
137 ms |
135160 KB |
Output is correct |
42 |
Correct |
134 ms |
135160 KB |
Output is correct |
43 |
Correct |
144 ms |
135164 KB |
Output is correct |
44 |
Correct |
154 ms |
135160 KB |
Output is correct |
45 |
Correct |
162 ms |
135132 KB |
Output is correct |
46 |
Correct |
165 ms |
135160 KB |
Output is correct |
47 |
Correct |
134 ms |
135160 KB |
Output is correct |
48 |
Correct |
135 ms |
135164 KB |
Output is correct |
49 |
Correct |
146 ms |
135208 KB |
Output is correct |
50 |
Correct |
163 ms |
135120 KB |
Output is correct |
51 |
Correct |
152 ms |
135260 KB |
Output is correct |
52 |
Correct |
144 ms |
135208 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
136 ms |
135160 KB |
Output is correct |
2 |
Correct |
136 ms |
135084 KB |
Output is correct |
3 |
Correct |
141 ms |
135064 KB |
Output is correct |
4 |
Correct |
137 ms |
135128 KB |
Output is correct |
5 |
Correct |
169 ms |
135032 KB |
Output is correct |
6 |
Correct |
153 ms |
135124 KB |
Output is correct |
7 |
Correct |
135 ms |
135020 KB |
Output is correct |
8 |
Correct |
143 ms |
135064 KB |
Output is correct |
9 |
Correct |
150 ms |
135316 KB |
Output is correct |
10 |
Correct |
158 ms |
135076 KB |
Output is correct |
11 |
Correct |
137 ms |
135032 KB |
Output is correct |
12 |
Correct |
164 ms |
135032 KB |
Output is correct |
13 |
Correct |
154 ms |
135048 KB |
Output is correct |
14 |
Correct |
134 ms |
135164 KB |
Output is correct |
15 |
Correct |
135 ms |
135224 KB |
Output is correct |
16 |
Correct |
136 ms |
135132 KB |
Output is correct |
17 |
Correct |
149 ms |
135076 KB |
Output is correct |
18 |
Correct |
155 ms |
135268 KB |
Output is correct |
19 |
Correct |
138 ms |
135160 KB |
Output is correct |
20 |
Correct |
134 ms |
135032 KB |
Output is correct |
21 |
Correct |
133 ms |
135160 KB |
Output is correct |
22 |
Correct |
134 ms |
135160 KB |
Output is correct |
23 |
Correct |
134 ms |
135148 KB |
Output is correct |
24 |
Correct |
135 ms |
135032 KB |
Output is correct |
25 |
Correct |
134 ms |
135160 KB |
Output is correct |
26 |
Correct |
133 ms |
135068 KB |
Output is correct |
27 |
Correct |
132 ms |
135132 KB |
Output is correct |
28 |
Correct |
133 ms |
135032 KB |
Output is correct |
29 |
Correct |
134 ms |
135032 KB |
Output is correct |
30 |
Correct |
134 ms |
135160 KB |
Output is correct |
31 |
Correct |
134 ms |
135148 KB |
Output is correct |
32 |
Correct |
133 ms |
135160 KB |
Output is correct |
33 |
Correct |
134 ms |
135052 KB |
Output is correct |
34 |
Correct |
134 ms |
135036 KB |
Output is correct |
35 |
Correct |
134 ms |
135032 KB |
Output is correct |
36 |
Correct |
133 ms |
135016 KB |
Output is correct |
37 |
Correct |
135 ms |
135052 KB |
Output is correct |
38 |
Correct |
133 ms |
135108 KB |
Output is correct |
39 |
Correct |
135 ms |
135168 KB |
Output is correct |
40 |
Correct |
135 ms |
135272 KB |
Output is correct |
41 |
Correct |
133 ms |
135164 KB |
Output is correct |
42 |
Correct |
134 ms |
135160 KB |
Output is correct |
43 |
Correct |
132 ms |
135072 KB |
Output is correct |
44 |
Correct |
133 ms |
135132 KB |
Output is correct |
45 |
Correct |
132 ms |
135100 KB |
Output is correct |
46 |
Correct |
134 ms |
135056 KB |
Output is correct |
47 |
Correct |
134 ms |
135032 KB |
Output is correct |
48 |
Correct |
134 ms |
135104 KB |
Output is correct |
49 |
Correct |
135 ms |
135032 KB |
Output is correct |
50 |
Correct |
135 ms |
135032 KB |
Output is correct |
51 |
Correct |
139 ms |
135160 KB |
Output is correct |
52 |
Correct |
138 ms |
135160 KB |
Output is correct |
53 |
Correct |
140 ms |
135192 KB |
Output is correct |
54 |
Correct |
142 ms |
135416 KB |
Output is correct |
55 |
Correct |
141 ms |
135416 KB |
Output is correct |
56 |
Correct |
179 ms |
137568 KB |
Output is correct |
57 |
Correct |
173 ms |
137716 KB |
Output is correct |
58 |
Correct |
182 ms |
137592 KB |
Output is correct |
59 |
Correct |
177 ms |
138020 KB |
Output is correct |
60 |
Correct |
189 ms |
138744 KB |
Output is correct |
61 |
Correct |
184 ms |
138696 KB |
Output is correct |
62 |
Correct |
187 ms |
139100 KB |
Output is correct |
63 |
Correct |
179 ms |
139188 KB |
Output is correct |
64 |
Correct |
182 ms |
139128 KB |
Output is correct |
65 |
Correct |
185 ms |
138792 KB |
Output is correct |
66 |
Correct |
175 ms |
139128 KB |
Output is correct |
67 |
Correct |
176 ms |
139000 KB |
Output is correct |
68 |
Correct |
180 ms |
139164 KB |
Output is correct |
69 |
Correct |
135 ms |
135100 KB |
Output is correct |
70 |
Correct |
133 ms |
135164 KB |
Output is correct |
71 |
Correct |
174 ms |
139128 KB |
Output is correct |
72 |
Correct |
177 ms |
139128 KB |
Output is correct |
73 |
Correct |
175 ms |
139132 KB |
Output is correct |
74 |
Correct |
134 ms |
135032 KB |
Output is correct |
75 |
Correct |
141 ms |
135120 KB |
Output is correct |
76 |
Correct |
134 ms |
135160 KB |
Output is correct |
77 |
Correct |
147 ms |
135164 KB |
Output is correct |
78 |
Correct |
207 ms |
137716 KB |
Output is correct |
79 |
Correct |
189 ms |
138744 KB |
Output is correct |
80 |
Correct |
210 ms |
138744 KB |
Output is correct |
81 |
Correct |
180 ms |
139144 KB |
Output is correct |
82 |
Correct |
208 ms |
138656 KB |
Output is correct |
83 |
Correct |
197 ms |
138616 KB |
Output is correct |
84 |
Correct |
152 ms |
135148 KB |
Output is correct |
85 |
Correct |
140 ms |
135092 KB |
Output is correct |
86 |
Correct |
134 ms |
135132 KB |
Output is correct |
87 |
Correct |
140 ms |
135032 KB |
Output is correct |
88 |
Correct |
137 ms |
135160 KB |
Output is correct |
89 |
Correct |
134 ms |
135160 KB |
Output is correct |
90 |
Correct |
144 ms |
135164 KB |
Output is correct |
91 |
Correct |
154 ms |
135160 KB |
Output is correct |
92 |
Correct |
162 ms |
135132 KB |
Output is correct |
93 |
Correct |
165 ms |
135160 KB |
Output is correct |
94 |
Correct |
134 ms |
135160 KB |
Output is correct |
95 |
Correct |
135 ms |
135164 KB |
Output is correct |
96 |
Correct |
146 ms |
135208 KB |
Output is correct |
97 |
Correct |
163 ms |
135120 KB |
Output is correct |
98 |
Correct |
152 ms |
135260 KB |
Output is correct |
99 |
Correct |
144 ms |
135208 KB |
Output is correct |
100 |
Correct |
157 ms |
135124 KB |
Output is correct |
101 |
Correct |
142 ms |
135416 KB |
Output is correct |
102 |
Correct |
167 ms |
135416 KB |
Output is correct |
103 |
Correct |
237 ms |
138772 KB |
Output is correct |
104 |
Correct |
196 ms |
138776 KB |
Output is correct |
105 |
Correct |
203 ms |
138744 KB |
Output is correct |
106 |
Correct |
207 ms |
138616 KB |
Output is correct |
107 |
Correct |
202 ms |
138828 KB |
Output is correct |
108 |
Correct |
184 ms |
138744 KB |
Output is correct |
109 |
Correct |
215 ms |
139192 KB |
Output is correct |
110 |
Correct |
211 ms |
139064 KB |
Output is correct |
111 |
Correct |
250 ms |
138872 KB |
Output is correct |
112 |
Correct |
215 ms |
138760 KB |
Output is correct |
113 |
Correct |
195 ms |
138688 KB |
Output is correct |
114 |
Correct |
249 ms |
138744 KB |
Output is correct |
115 |
Correct |
204 ms |
138616 KB |
Output is correct |