//#define NDEBUG
#include <bits/stdc++.h>
#include <bits/extc++.h>
#include "shoes.h"
#define StarBurstStream ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define iter(a) a.begin(), a.end()
#define riter(a) a.rbegin(), a.rend()
#define lsort(a) sort(iter(a))
#define gsort(a) sort(riter(a))
#define mp(a, b) make_pair(a, b)
#define pb(a) push_back(a)
#define eb(a) emplace_back(a)
#define pf(a) push_front(a)
#define pob pop_back()
#define pof pop_front()
#define F first
#define S second
#define printv(a, b) {bool pvaspace=false; \
for(auto pva : a){ \
if(pvaspace) b << " "; pvaspace=true;\
b << pva;\
}\
b << "\n";}
#define pii pair<int, int>
#define pll pair<ll, ll>
#define tiii tuple<int, int, int>
#define mt make_tuple
#define gt(t, i) get<i>(t)
#define iceil(a, b) ((a) / (b) + !!((a) % (b)))
//#define TEST
typedef long long ll;
typedef unsigned long long ull;
using namespace std;
using namespace __gnu_pbds;
const ll MOD = 1000000007;
const ll MAX = 2147483647;
template<typename A, typename B>
ostream &operator<<(ostream &o, pair<A, B> p){
return o << '(' << p.F << ',' << p.S << ')';
}
vector<ll> BIT;
int lowbit(int x){
return x & -x;
}
void modify(int x, int v){
for(; x < BIT.size(); x += lowbit(x)) BIT[x] += v;
}
ll query(int x){
if(x == 0) return 0;
ll ans = 0;
for(; x > 0; x -= lowbit(x)) ans += BIT[x];
return ans;
}
ll query(int l, int r){
if(r < l) return 0;
return query(r) - query(l - 1);
}
ll count_swaps(vector<int> s){
int n = s.size();
s.insert(s.begin(), 0);
BIT.resize(n + 1);
for(int i = 1; i <= n; i++) modify(i, 1);
ll ans = 0;
unordered_map<ll, queue<int>> pos;
for(int i = 1; i <= n; i++){
pos[s[i]].push(i);
}
for(int i = 1; i <= n; i++){
if(pos[s[i]].empty() || pos[s[i]].front() != i) continue;
int t = pos[-s[i]].front();
pos[s[i]].pop();
pos[-s[i]].pop();
ans += query(i + 1, t - 1);
if(s[i] > 0) ans++;
modify(i, -1);
modify(t, -1);
}
return ans;
}
Compilation message
shoes.cpp: In function 'void modify(int, int)':
shoes.cpp:57:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(; x < BIT.size(); x += lowbit(x)) BIT[x] += v;
~~^~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 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 |
256 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
5 ms |
384 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
384 KB |
Output is correct |
11 |
Correct |
5 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 |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 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 |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
256 KB |
Output is correct |
20 |
Correct |
6 ms |
256 KB |
Output is correct |
21 |
Correct |
5 ms |
384 KB |
Output is correct |
22 |
Correct |
5 ms |
256 KB |
Output is correct |
23 |
Correct |
4 ms |
256 KB |
Output is correct |
24 |
Correct |
5 ms |
384 KB |
Output is correct |
25 |
Correct |
5 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 |
5 ms |
384 KB |
Output is correct |
29 |
Correct |
5 ms |
256 KB |
Output is correct |
30 |
Correct |
5 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
384 KB |
Output is correct |
32 |
Correct |
5 ms |
256 KB |
Output is correct |
33 |
Correct |
5 ms |
384 KB |
Output is correct |
34 |
Correct |
5 ms |
256 KB |
Output is correct |
35 |
Correct |
9 ms |
384 KB |
Output is correct |
36 |
Correct |
6 ms |
384 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
256 KB |
Output is correct |
4 |
Correct |
5 ms |
256 KB |
Output is correct |
5 |
Correct |
5 ms |
256 KB |
Output is correct |
6 |
Correct |
5 ms |
256 KB |
Output is correct |
7 |
Correct |
5 ms |
256 KB |
Output is correct |
8 |
Correct |
5 ms |
384 KB |
Output is correct |
9 |
Correct |
5 ms |
384 KB |
Output is correct |
10 |
Correct |
6 ms |
256 KB |
Output is correct |
11 |
Correct |
5 ms |
256 KB |
Output is correct |
12 |
Correct |
5 ms |
256 KB |
Output is correct |
13 |
Correct |
3 ms |
384 KB |
Output is correct |
14 |
Correct |
5 ms |
384 KB |
Output is correct |
15 |
Correct |
5 ms |
384 KB |
Output is correct |
16 |
Correct |
5 ms |
256 KB |
Output is correct |
17 |
Correct |
5 ms |
384 KB |
Output is correct |
18 |
Correct |
5 ms |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
384 KB |
Output is correct |
20 |
Correct |
13 ms |
896 KB |
Output is correct |
21 |
Correct |
10 ms |
768 KB |
Output is correct |
22 |
Correct |
72 ms |
5480 KB |
Output is correct |
23 |
Correct |
56 ms |
5592 KB |
Output is correct |
24 |
Correct |
62 ms |
5608 KB |
Output is correct |
25 |
Correct |
62 ms |
5348 KB |
Output is correct |
26 |
Correct |
67 ms |
5584 KB |
Output is correct |
27 |
Correct |
61 ms |
5328 KB |
Output is correct |
28 |
Correct |
57 ms |
5608 KB |
Output is correct |
29 |
Correct |
64 ms |
5608 KB |
Output is correct |
30 |
Correct |
64 ms |
5584 KB |
Output is correct |
31 |
Correct |
61 ms |
5608 KB |
Output is correct |
32 |
Correct |
79 ms |
5608 KB |
Output is correct |
33 |
Correct |
67 ms |
5352 KB |
Output is correct |
34 |
Correct |
54 ms |
5480 KB |
Output is correct |
35 |
Correct |
5 ms |
384 KB |
Output is correct |
36 |
Correct |
5 ms |
256 KB |
Output is correct |
37 |
Correct |
64 ms |
5480 KB |
Output is correct |
38 |
Correct |
60 ms |
5608 KB |
Output is correct |
39 |
Correct |
58 ms |
5608 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
256 KB |
Output is correct |
3 |
Correct |
5 ms |
384 KB |
Output is correct |
4 |
Correct |
5 ms |
384 KB |
Output is correct |
5 |
Correct |
316 ms |
147332 KB |
Output is correct |
6 |
Correct |
109 ms |
17260 KB |
Output is correct |
7 |
Correct |
317 ms |
147356 KB |
Output is correct |
8 |
Correct |
62 ms |
5608 KB |
Output is correct |
9 |
Correct |
303 ms |
147356 KB |
Output is correct |
10 |
Correct |
235 ms |
76008 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 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 |
256 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
5 ms |
384 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
384 KB |
Output is correct |
11 |
Correct |
5 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 |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 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 |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
256 KB |
Output is correct |
20 |
Correct |
6 ms |
256 KB |
Output is correct |
21 |
Correct |
5 ms |
384 KB |
Output is correct |
22 |
Correct |
5 ms |
256 KB |
Output is correct |
23 |
Correct |
4 ms |
256 KB |
Output is correct |
24 |
Correct |
5 ms |
384 KB |
Output is correct |
25 |
Correct |
5 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 |
5 ms |
384 KB |
Output is correct |
29 |
Correct |
5 ms |
256 KB |
Output is correct |
30 |
Correct |
5 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
384 KB |
Output is correct |
32 |
Correct |
5 ms |
256 KB |
Output is correct |
33 |
Correct |
5 ms |
384 KB |
Output is correct |
34 |
Correct |
5 ms |
256 KB |
Output is correct |
35 |
Correct |
9 ms |
384 KB |
Output is correct |
36 |
Correct |
6 ms |
384 KB |
Output is correct |
37 |
Correct |
5 ms |
256 KB |
Output is correct |
38 |
Correct |
5 ms |
384 KB |
Output is correct |
39 |
Correct |
5 ms |
512 KB |
Output is correct |
40 |
Correct |
5 ms |
768 KB |
Output is correct |
41 |
Correct |
7 ms |
1792 KB |
Output is correct |
42 |
Correct |
7 ms |
1792 KB |
Output is correct |
43 |
Correct |
7 ms |
1664 KB |
Output is correct |
44 |
Correct |
6 ms |
1536 KB |
Output is correct |
45 |
Correct |
6 ms |
1280 KB |
Output is correct |
46 |
Correct |
7 ms |
1152 KB |
Output is correct |
47 |
Correct |
6 ms |
1024 KB |
Output is correct |
48 |
Correct |
5 ms |
768 KB |
Output is correct |
49 |
Correct |
6 ms |
640 KB |
Output is correct |
50 |
Correct |
6 ms |
384 KB |
Output is correct |
51 |
Correct |
5 ms |
384 KB |
Output is correct |
52 |
Correct |
8 ms |
1792 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
256 KB |
Output is correct |
2 |
Correct |
5 ms |
384 KB |
Output is correct |
3 |
Correct |
5 ms |
384 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 |
256 KB |
Output is correct |
7 |
Correct |
5 ms |
384 KB |
Output is correct |
8 |
Correct |
5 ms |
384 KB |
Output is correct |
9 |
Correct |
5 ms |
256 KB |
Output is correct |
10 |
Correct |
5 ms |
384 KB |
Output is correct |
11 |
Correct |
5 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 |
5 ms |
256 KB |
Output is correct |
15 |
Correct |
5 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 |
384 KB |
Output is correct |
19 |
Correct |
5 ms |
256 KB |
Output is correct |
20 |
Correct |
6 ms |
256 KB |
Output is correct |
21 |
Correct |
5 ms |
384 KB |
Output is correct |
22 |
Correct |
5 ms |
256 KB |
Output is correct |
23 |
Correct |
4 ms |
256 KB |
Output is correct |
24 |
Correct |
5 ms |
384 KB |
Output is correct |
25 |
Correct |
5 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 |
5 ms |
384 KB |
Output is correct |
29 |
Correct |
5 ms |
256 KB |
Output is correct |
30 |
Correct |
5 ms |
256 KB |
Output is correct |
31 |
Correct |
5 ms |
384 KB |
Output is correct |
32 |
Correct |
5 ms |
256 KB |
Output is correct |
33 |
Correct |
5 ms |
384 KB |
Output is correct |
34 |
Correct |
5 ms |
256 KB |
Output is correct |
35 |
Correct |
9 ms |
384 KB |
Output is correct |
36 |
Correct |
6 ms |
384 KB |
Output is correct |
37 |
Correct |
5 ms |
256 KB |
Output is correct |
38 |
Correct |
5 ms |
256 KB |
Output is correct |
39 |
Correct |
5 ms |
256 KB |
Output is correct |
40 |
Correct |
5 ms |
256 KB |
Output is correct |
41 |
Correct |
5 ms |
256 KB |
Output is correct |
42 |
Correct |
5 ms |
384 KB |
Output is correct |
43 |
Correct |
5 ms |
384 KB |
Output is correct |
44 |
Correct |
6 ms |
256 KB |
Output is correct |
45 |
Correct |
5 ms |
256 KB |
Output is correct |
46 |
Correct |
5 ms |
256 KB |
Output is correct |
47 |
Correct |
3 ms |
384 KB |
Output is correct |
48 |
Correct |
5 ms |
384 KB |
Output is correct |
49 |
Correct |
5 ms |
384 KB |
Output is correct |
50 |
Correct |
5 ms |
256 KB |
Output is correct |
51 |
Correct |
5 ms |
384 KB |
Output is correct |
52 |
Correct |
5 ms |
384 KB |
Output is correct |
53 |
Correct |
5 ms |
384 KB |
Output is correct |
54 |
Correct |
13 ms |
896 KB |
Output is correct |
55 |
Correct |
10 ms |
768 KB |
Output is correct |
56 |
Correct |
72 ms |
5480 KB |
Output is correct |
57 |
Correct |
56 ms |
5592 KB |
Output is correct |
58 |
Correct |
62 ms |
5608 KB |
Output is correct |
59 |
Correct |
62 ms |
5348 KB |
Output is correct |
60 |
Correct |
67 ms |
5584 KB |
Output is correct |
61 |
Correct |
61 ms |
5328 KB |
Output is correct |
62 |
Correct |
57 ms |
5608 KB |
Output is correct |
63 |
Correct |
64 ms |
5608 KB |
Output is correct |
64 |
Correct |
64 ms |
5584 KB |
Output is correct |
65 |
Correct |
61 ms |
5608 KB |
Output is correct |
66 |
Correct |
79 ms |
5608 KB |
Output is correct |
67 |
Correct |
67 ms |
5352 KB |
Output is correct |
68 |
Correct |
54 ms |
5480 KB |
Output is correct |
69 |
Correct |
5 ms |
384 KB |
Output is correct |
70 |
Correct |
5 ms |
256 KB |
Output is correct |
71 |
Correct |
64 ms |
5480 KB |
Output is correct |
72 |
Correct |
60 ms |
5608 KB |
Output is correct |
73 |
Correct |
58 ms |
5608 KB |
Output is correct |
74 |
Correct |
5 ms |
256 KB |
Output is correct |
75 |
Correct |
5 ms |
256 KB |
Output is correct |
76 |
Correct |
5 ms |
384 KB |
Output is correct |
77 |
Correct |
5 ms |
384 KB |
Output is correct |
78 |
Correct |
316 ms |
147332 KB |
Output is correct |
79 |
Correct |
109 ms |
17260 KB |
Output is correct |
80 |
Correct |
317 ms |
147356 KB |
Output is correct |
81 |
Correct |
62 ms |
5608 KB |
Output is correct |
82 |
Correct |
303 ms |
147356 KB |
Output is correct |
83 |
Correct |
235 ms |
76008 KB |
Output is correct |
84 |
Correct |
5 ms |
256 KB |
Output is correct |
85 |
Correct |
5 ms |
384 KB |
Output is correct |
86 |
Correct |
5 ms |
512 KB |
Output is correct |
87 |
Correct |
5 ms |
768 KB |
Output is correct |
88 |
Correct |
7 ms |
1792 KB |
Output is correct |
89 |
Correct |
7 ms |
1792 KB |
Output is correct |
90 |
Correct |
7 ms |
1664 KB |
Output is correct |
91 |
Correct |
6 ms |
1536 KB |
Output is correct |
92 |
Correct |
6 ms |
1280 KB |
Output is correct |
93 |
Correct |
7 ms |
1152 KB |
Output is correct |
94 |
Correct |
6 ms |
1024 KB |
Output is correct |
95 |
Correct |
5 ms |
768 KB |
Output is correct |
96 |
Correct |
6 ms |
640 KB |
Output is correct |
97 |
Correct |
6 ms |
384 KB |
Output is correct |
98 |
Correct |
5 ms |
384 KB |
Output is correct |
99 |
Correct |
8 ms |
1792 KB |
Output is correct |
100 |
Correct |
7 ms |
1792 KB |
Output is correct |
101 |
Correct |
34 ms |
13696 KB |
Output is correct |
102 |
Correct |
14 ms |
3616 KB |
Output is correct |
103 |
Correct |
387 ms |
147340 KB |
Output is correct |
104 |
Correct |
313 ms |
147356 KB |
Output is correct |
105 |
Correct |
316 ms |
86428 KB |
Output is correct |
106 |
Correct |
345 ms |
147356 KB |
Output is correct |
107 |
Correct |
139 ms |
20628 KB |
Output is correct |
108 |
Correct |
160 ms |
36444 KB |
Output is correct |
109 |
Correct |
62 ms |
5736 KB |
Output is correct |
110 |
Correct |
55 ms |
5608 KB |
Output is correct |
111 |
Correct |
320 ms |
131680 KB |
Output is correct |
112 |
Correct |
327 ms |
115996 KB |
Output is correct |
113 |
Correct |
155 ms |
22376 KB |
Output is correct |
114 |
Correct |
330 ms |
147356 KB |
Output is correct |
115 |
Correct |
306 ms |
147356 KB |
Output is correct |