#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC target ("sse4")
#define endl "\n"
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
template<class T, class T2> inline bool chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline bool chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
const ll mod = 1e9 + 7;
template<class T> inline void fix(T &x) {if(x >= mod | x <= -mod) {x %= mod;} if(x < 0) {x += mod;}}
#define out(x) cout << __LINE__ << ": " << (#x) << " = " << (x) << endl
const ll MAX_N = 5e5 + 10;
ll tree[4 * MAX_N], lazy[4 * MAX_N];
void upd(ll curr, ll l, ll r, ll ind, ll val) {
if(ind < l || r < ind) {
return;
} else if(l == ind && ind == r) {
tree[curr] += val;
return;
}
ll m = (l + r) / 2ll;
upd(curr * 2, l, m, ind, val);
upd(curr * 2 + 1, m + 1, r, ind, val);
tree[curr] = tree[curr * 2] + tree[curr * 2 + 1];
}
ll sum(ll curr, ll l, ll r, ll ql, ll qr) {
if(ql <= l && r <= qr) {
return tree[curr];
} else if(l > qr || r < ql) {
return 0;
}
ll m = (l + r) / 2ll;
return sum(curr * 2, l, m, ql, qr) + sum(curr * 2 + 1, m + 1, r, ql, qr);
}
map<ll, vector<ll> > mp;
bool got[MAX_N];
ll count_swaps(vector<int> arr) {
for(ll i = 0; i < arr.size(); i ++) {
mp[arr[i]].push_back(i);
}
for(auto &it : mp) {
reverse(it.second.begin(), it.second.end());
}
ll ret = 0;
for(ll i = 0; i < arr.size(); i ++) {
if(got[i]) {continue;}
if(arr[i] > 0) {ret ++;}
got[i] = true;
got[mp[-arr[i]].back()] = true;
ret += (mp[-arr[i]].back() - i - 1) - sum(1, 0, MAX_N - 1, i, mp[-arr[i]].back());
upd(1, 0, MAX_N - 1, mp[-arr[i]].back(), 1);
mp[arr[i]].pop_back();
mp[-arr[i]].pop_back();
}
return ret;
}
/*
signed main() {
//ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
ll n;
cin >> n;
vector<ll> arr;
arr.resize(n);
for(ll i = 0; i < n; i ++) {
cin >> arr[i];
}
cout << shoes(arr);
return 0;
}*/
Compilation message
shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:46:22: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
46 | for(ll i = 0; i < arr.size(); i ++) {
| ~~^~~~~~~~~~~~
shoes.cpp:53:22: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
53 | for(ll i = 0; i < arr.size(); i ++) {
| ~~^~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
512 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
512 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
1 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
1 ms |
384 KB |
Output is correct |
15 |
Correct |
1 ms |
384 KB |
Output is correct |
16 |
Correct |
1 ms |
384 KB |
Output is correct |
17 |
Correct |
1 ms |
384 KB |
Output is correct |
18 |
Correct |
1 ms |
384 KB |
Output is correct |
19 |
Correct |
1 ms |
384 KB |
Output is correct |
20 |
Correct |
1 ms |
384 KB |
Output is correct |
21 |
Correct |
1 ms |
512 KB |
Output is correct |
22 |
Correct |
1 ms |
384 KB |
Output is correct |
23 |
Correct |
1 ms |
512 KB |
Output is correct |
24 |
Correct |
1 ms |
384 KB |
Output is correct |
25 |
Correct |
1 ms |
512 KB |
Output is correct |
26 |
Correct |
1 ms |
384 KB |
Output is correct |
27 |
Correct |
1 ms |
512 KB |
Output is correct |
28 |
Correct |
1 ms |
384 KB |
Output is correct |
29 |
Correct |
1 ms |
384 KB |
Output is correct |
30 |
Correct |
1 ms |
384 KB |
Output is correct |
31 |
Correct |
1 ms |
384 KB |
Output is correct |
32 |
Correct |
1 ms |
384 KB |
Output is correct |
33 |
Correct |
1 ms |
384 KB |
Output is correct |
34 |
Correct |
1 ms |
384 KB |
Output is correct |
35 |
Correct |
1 ms |
384 KB |
Output is correct |
36 |
Correct |
1 ms |
384 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
384 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
1 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
416 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
1 ms |
384 KB |
Output is correct |
15 |
Correct |
1 ms |
384 KB |
Output is correct |
16 |
Correct |
1 ms |
384 KB |
Output is correct |
17 |
Correct |
1 ms |
384 KB |
Output is correct |
18 |
Correct |
1 ms |
512 KB |
Output is correct |
19 |
Correct |
1 ms |
512 KB |
Output is correct |
20 |
Correct |
9 ms |
1280 KB |
Output is correct |
21 |
Correct |
10 ms |
1348 KB |
Output is correct |
22 |
Correct |
87 ms |
8564 KB |
Output is correct |
23 |
Correct |
78 ms |
8548 KB |
Output is correct |
24 |
Correct |
85 ms |
8456 KB |
Output is correct |
25 |
Correct |
84 ms |
6632 KB |
Output is correct |
26 |
Correct |
95 ms |
8548 KB |
Output is correct |
27 |
Correct |
79 ms |
8296 KB |
Output is correct |
28 |
Correct |
88 ms |
6764 KB |
Output is correct |
29 |
Correct |
87 ms |
6764 KB |
Output is correct |
30 |
Correct |
90 ms |
6760 KB |
Output is correct |
31 |
Correct |
86 ms |
8440 KB |
Output is correct |
32 |
Correct |
89 ms |
6764 KB |
Output is correct |
33 |
Correct |
84 ms |
6504 KB |
Output is correct |
34 |
Correct |
95 ms |
6764 KB |
Output is correct |
35 |
Correct |
1 ms |
384 KB |
Output is correct |
36 |
Correct |
1 ms |
384 KB |
Output is correct |
37 |
Correct |
91 ms |
6760 KB |
Output is correct |
38 |
Correct |
87 ms |
6764 KB |
Output is correct |
39 |
Correct |
91 ms |
6764 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
384 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
446 ms |
27000 KB |
Output is correct |
6 |
Correct |
218 ms |
9084 KB |
Output is correct |
7 |
Correct |
450 ms |
27000 KB |
Output is correct |
8 |
Correct |
92 ms |
7212 KB |
Output is correct |
9 |
Correct |
454 ms |
27000 KB |
Output is correct |
10 |
Correct |
362 ms |
16504 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
512 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
512 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
1 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
1 ms |
384 KB |
Output is correct |
15 |
Correct |
1 ms |
384 KB |
Output is correct |
16 |
Correct |
1 ms |
384 KB |
Output is correct |
17 |
Correct |
1 ms |
384 KB |
Output is correct |
18 |
Correct |
1 ms |
384 KB |
Output is correct |
19 |
Correct |
1 ms |
384 KB |
Output is correct |
20 |
Correct |
1 ms |
384 KB |
Output is correct |
21 |
Correct |
1 ms |
512 KB |
Output is correct |
22 |
Correct |
1 ms |
384 KB |
Output is correct |
23 |
Correct |
1 ms |
512 KB |
Output is correct |
24 |
Correct |
1 ms |
384 KB |
Output is correct |
25 |
Correct |
1 ms |
512 KB |
Output is correct |
26 |
Correct |
1 ms |
384 KB |
Output is correct |
27 |
Correct |
1 ms |
512 KB |
Output is correct |
28 |
Correct |
1 ms |
384 KB |
Output is correct |
29 |
Correct |
1 ms |
384 KB |
Output is correct |
30 |
Correct |
1 ms |
384 KB |
Output is correct |
31 |
Correct |
1 ms |
384 KB |
Output is correct |
32 |
Correct |
1 ms |
384 KB |
Output is correct |
33 |
Correct |
1 ms |
384 KB |
Output is correct |
34 |
Correct |
1 ms |
384 KB |
Output is correct |
35 |
Correct |
1 ms |
384 KB |
Output is correct |
36 |
Correct |
1 ms |
384 KB |
Output is correct |
37 |
Correct |
1 ms |
384 KB |
Output is correct |
38 |
Correct |
1 ms |
384 KB |
Output is correct |
39 |
Correct |
1 ms |
384 KB |
Output is correct |
40 |
Correct |
1 ms |
384 KB |
Output is correct |
41 |
Correct |
3 ms |
640 KB |
Output is correct |
42 |
Correct |
2 ms |
640 KB |
Output is correct |
43 |
Correct |
3 ms |
640 KB |
Output is correct |
44 |
Correct |
3 ms |
768 KB |
Output is correct |
45 |
Correct |
2 ms |
640 KB |
Output is correct |
46 |
Correct |
2 ms |
512 KB |
Output is correct |
47 |
Correct |
2 ms |
512 KB |
Output is correct |
48 |
Correct |
2 ms |
512 KB |
Output is correct |
49 |
Correct |
2 ms |
512 KB |
Output is correct |
50 |
Correct |
2 ms |
512 KB |
Output is correct |
51 |
Correct |
1 ms |
384 KB |
Output is correct |
52 |
Correct |
3 ms |
640 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
384 KB |
Output is correct |
3 |
Correct |
1 ms |
512 KB |
Output is correct |
4 |
Correct |
1 ms |
384 KB |
Output is correct |
5 |
Correct |
1 ms |
384 KB |
Output is correct |
6 |
Correct |
1 ms |
384 KB |
Output is correct |
7 |
Correct |
1 ms |
512 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
1 ms |
384 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
384 KB |
Output is correct |
12 |
Correct |
1 ms |
384 KB |
Output is correct |
13 |
Correct |
1 ms |
384 KB |
Output is correct |
14 |
Correct |
1 ms |
384 KB |
Output is correct |
15 |
Correct |
1 ms |
384 KB |
Output is correct |
16 |
Correct |
1 ms |
384 KB |
Output is correct |
17 |
Correct |
1 ms |
384 KB |
Output is correct |
18 |
Correct |
1 ms |
384 KB |
Output is correct |
19 |
Correct |
1 ms |
384 KB |
Output is correct |
20 |
Correct |
1 ms |
384 KB |
Output is correct |
21 |
Correct |
1 ms |
512 KB |
Output is correct |
22 |
Correct |
1 ms |
384 KB |
Output is correct |
23 |
Correct |
1 ms |
512 KB |
Output is correct |
24 |
Correct |
1 ms |
384 KB |
Output is correct |
25 |
Correct |
1 ms |
512 KB |
Output is correct |
26 |
Correct |
1 ms |
384 KB |
Output is correct |
27 |
Correct |
1 ms |
512 KB |
Output is correct |
28 |
Correct |
1 ms |
384 KB |
Output is correct |
29 |
Correct |
1 ms |
384 KB |
Output is correct |
30 |
Correct |
1 ms |
384 KB |
Output is correct |
31 |
Correct |
1 ms |
384 KB |
Output is correct |
32 |
Correct |
1 ms |
384 KB |
Output is correct |
33 |
Correct |
1 ms |
384 KB |
Output is correct |
34 |
Correct |
1 ms |
384 KB |
Output is correct |
35 |
Correct |
1 ms |
384 KB |
Output is correct |
36 |
Correct |
1 ms |
384 KB |
Output is correct |
37 |
Correct |
1 ms |
384 KB |
Output is correct |
38 |
Correct |
1 ms |
384 KB |
Output is correct |
39 |
Correct |
1 ms |
384 KB |
Output is correct |
40 |
Correct |
1 ms |
384 KB |
Output is correct |
41 |
Correct |
1 ms |
384 KB |
Output is correct |
42 |
Correct |
1 ms |
384 KB |
Output is correct |
43 |
Correct |
1 ms |
384 KB |
Output is correct |
44 |
Correct |
1 ms |
416 KB |
Output is correct |
45 |
Correct |
1 ms |
384 KB |
Output is correct |
46 |
Correct |
1 ms |
384 KB |
Output is correct |
47 |
Correct |
1 ms |
384 KB |
Output is correct |
48 |
Correct |
1 ms |
384 KB |
Output is correct |
49 |
Correct |
1 ms |
384 KB |
Output is correct |
50 |
Correct |
1 ms |
384 KB |
Output is correct |
51 |
Correct |
1 ms |
384 KB |
Output is correct |
52 |
Correct |
1 ms |
512 KB |
Output is correct |
53 |
Correct |
1 ms |
512 KB |
Output is correct |
54 |
Correct |
9 ms |
1280 KB |
Output is correct |
55 |
Correct |
10 ms |
1348 KB |
Output is correct |
56 |
Correct |
87 ms |
8564 KB |
Output is correct |
57 |
Correct |
78 ms |
8548 KB |
Output is correct |
58 |
Correct |
85 ms |
8456 KB |
Output is correct |
59 |
Correct |
84 ms |
6632 KB |
Output is correct |
60 |
Correct |
95 ms |
8548 KB |
Output is correct |
61 |
Correct |
79 ms |
8296 KB |
Output is correct |
62 |
Correct |
88 ms |
6764 KB |
Output is correct |
63 |
Correct |
87 ms |
6764 KB |
Output is correct |
64 |
Correct |
90 ms |
6760 KB |
Output is correct |
65 |
Correct |
86 ms |
8440 KB |
Output is correct |
66 |
Correct |
89 ms |
6764 KB |
Output is correct |
67 |
Correct |
84 ms |
6504 KB |
Output is correct |
68 |
Correct |
95 ms |
6764 KB |
Output is correct |
69 |
Correct |
1 ms |
384 KB |
Output is correct |
70 |
Correct |
1 ms |
384 KB |
Output is correct |
71 |
Correct |
91 ms |
6760 KB |
Output is correct |
72 |
Correct |
87 ms |
6764 KB |
Output is correct |
73 |
Correct |
91 ms |
6764 KB |
Output is correct |
74 |
Correct |
1 ms |
384 KB |
Output is correct |
75 |
Correct |
1 ms |
384 KB |
Output is correct |
76 |
Correct |
1 ms |
384 KB |
Output is correct |
77 |
Correct |
1 ms |
384 KB |
Output is correct |
78 |
Correct |
446 ms |
27000 KB |
Output is correct |
79 |
Correct |
218 ms |
9084 KB |
Output is correct |
80 |
Correct |
450 ms |
27000 KB |
Output is correct |
81 |
Correct |
92 ms |
7212 KB |
Output is correct |
82 |
Correct |
454 ms |
27000 KB |
Output is correct |
83 |
Correct |
362 ms |
16504 KB |
Output is correct |
84 |
Correct |
1 ms |
384 KB |
Output is correct |
85 |
Correct |
1 ms |
384 KB |
Output is correct |
86 |
Correct |
1 ms |
384 KB |
Output is correct |
87 |
Correct |
1 ms |
384 KB |
Output is correct |
88 |
Correct |
3 ms |
640 KB |
Output is correct |
89 |
Correct |
2 ms |
640 KB |
Output is correct |
90 |
Correct |
3 ms |
640 KB |
Output is correct |
91 |
Correct |
3 ms |
768 KB |
Output is correct |
92 |
Correct |
2 ms |
640 KB |
Output is correct |
93 |
Correct |
2 ms |
512 KB |
Output is correct |
94 |
Correct |
2 ms |
512 KB |
Output is correct |
95 |
Correct |
2 ms |
512 KB |
Output is correct |
96 |
Correct |
2 ms |
512 KB |
Output is correct |
97 |
Correct |
2 ms |
512 KB |
Output is correct |
98 |
Correct |
1 ms |
384 KB |
Output is correct |
99 |
Correct |
3 ms |
640 KB |
Output is correct |
100 |
Correct |
3 ms |
640 KB |
Output is correct |
101 |
Correct |
27 ms |
2944 KB |
Output is correct |
102 |
Correct |
20 ms |
1536 KB |
Output is correct |
103 |
Correct |
602 ms |
28664 KB |
Output is correct |
104 |
Correct |
396 ms |
28536 KB |
Output is correct |
105 |
Correct |
514 ms |
19576 KB |
Output is correct |
106 |
Correct |
453 ms |
27000 KB |
Output is correct |
107 |
Correct |
237 ms |
11260 KB |
Output is correct |
108 |
Correct |
256 ms |
13176 KB |
Output is correct |
109 |
Correct |
90 ms |
7660 KB |
Output is correct |
110 |
Correct |
90 ms |
6888 KB |
Output is correct |
111 |
Correct |
426 ms |
24568 KB |
Output is correct |
112 |
Correct |
511 ms |
23800 KB |
Output is correct |
113 |
Correct |
281 ms |
9848 KB |
Output is correct |
114 |
Correct |
444 ms |
26912 KB |
Output is correct |
115 |
Correct |
452 ms |
27048 KB |
Output is correct |