#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ar array
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
const int mxN=2e5;
int n, a[mxN];
vector<int> oc[mxN];
ll ans;
set<int> s;
tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> t;
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cin >> n;
for (int i=0; i<n; ++i) {
cin >> a[i], --a[i];
oc[a[i]].push_back(i);
}
for (int i=n-1; ~i; --i) {
for (int j : oc[i])
s.insert(j);
if (s.empty()) {
cout << -1;
return 0;
}
int x=*s.rbegin();
s.erase(--s.end());
t.insert(x);
x-=t.order_of_key(x);
ans+=i-x;
}
cout << ans;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
5352 KB |
Output is correct |
2 |
Correct |
6 ms |
5324 KB |
Output is correct |
3 |
Correct |
6 ms |
5284 KB |
Output is correct |
4 |
Correct |
6 ms |
5324 KB |
Output is correct |
5 |
Correct |
8 ms |
5380 KB |
Output is correct |
6 |
Correct |
7 ms |
5324 KB |
Output is correct |
7 |
Correct |
8 ms |
5416 KB |
Output is correct |
8 |
Correct |
7 ms |
5452 KB |
Output is correct |
9 |
Correct |
6 ms |
5324 KB |
Output is correct |
10 |
Correct |
6 ms |
5452 KB |
Output is correct |
11 |
Correct |
6 ms |
5452 KB |
Output is correct |
12 |
Correct |
6 ms |
5416 KB |
Output is correct |
13 |
Correct |
7 ms |
5324 KB |
Output is correct |
14 |
Correct |
7 ms |
5288 KB |
Output is correct |
15 |
Correct |
6 ms |
5324 KB |
Output is correct |
16 |
Correct |
8 ms |
5388 KB |
Output is correct |
17 |
Correct |
6 ms |
5324 KB |
Output is correct |
18 |
Correct |
6 ms |
5288 KB |
Output is correct |
19 |
Correct |
7 ms |
5324 KB |
Output is correct |
20 |
Correct |
6 ms |
5324 KB |
Output is correct |
21 |
Correct |
6 ms |
5324 KB |
Output is correct |
22 |
Correct |
8 ms |
5284 KB |
Output is correct |
23 |
Correct |
7 ms |
5324 KB |
Output is correct |
24 |
Correct |
7 ms |
5388 KB |
Output is correct |
25 |
Correct |
7 ms |
5324 KB |
Output is correct |
26 |
Correct |
7 ms |
5324 KB |
Output is correct |
27 |
Correct |
7 ms |
5284 KB |
Output is correct |
28 |
Correct |
6 ms |
5324 KB |
Output is correct |
29 |
Correct |
7 ms |
5324 KB |
Output is correct |
30 |
Correct |
6 ms |
5292 KB |
Output is correct |
31 |
Correct |
5 ms |
5248 KB |
Output is correct |
32 |
Correct |
7 ms |
5288 KB |
Output is correct |
33 |
Correct |
6 ms |
5452 KB |
Output is correct |
34 |
Correct |
6 ms |
5324 KB |
Output is correct |
35 |
Correct |
6 ms |
5288 KB |
Output is correct |
36 |
Correct |
7 ms |
5324 KB |
Output is correct |
37 |
Correct |
6 ms |
5452 KB |
Output is correct |
38 |
Correct |
7 ms |
5324 KB |
Output is correct |
39 |
Correct |
6 ms |
5324 KB |
Output is correct |
40 |
Correct |
6 ms |
5284 KB |
Output is correct |
41 |
Correct |
4 ms |
5068 KB |
Output is correct |
42 |
Correct |
7 ms |
5288 KB |
Output is correct |
43 |
Correct |
4 ms |
5160 KB |
Output is correct |
44 |
Correct |
4 ms |
4940 KB |
Output is correct |
45 |
Correct |
3 ms |
5020 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
5352 KB |
Output is correct |
2 |
Correct |
6 ms |
5324 KB |
Output is correct |
3 |
Correct |
6 ms |
5284 KB |
Output is correct |
4 |
Correct |
6 ms |
5324 KB |
Output is correct |
5 |
Correct |
8 ms |
5380 KB |
Output is correct |
6 |
Correct |
7 ms |
5324 KB |
Output is correct |
7 |
Correct |
8 ms |
5416 KB |
Output is correct |
8 |
Correct |
7 ms |
5452 KB |
Output is correct |
9 |
Correct |
6 ms |
5324 KB |
Output is correct |
10 |
Correct |
6 ms |
5452 KB |
Output is correct |
11 |
Correct |
6 ms |
5452 KB |
Output is correct |
12 |
Correct |
6 ms |
5416 KB |
Output is correct |
13 |
Correct |
7 ms |
5324 KB |
Output is correct |
14 |
Correct |
7 ms |
5288 KB |
Output is correct |
15 |
Correct |
6 ms |
5324 KB |
Output is correct |
16 |
Correct |
8 ms |
5388 KB |
Output is correct |
17 |
Correct |
6 ms |
5324 KB |
Output is correct |
18 |
Correct |
6 ms |
5288 KB |
Output is correct |
19 |
Correct |
7 ms |
5324 KB |
Output is correct |
20 |
Correct |
6 ms |
5324 KB |
Output is correct |
21 |
Correct |
6 ms |
5324 KB |
Output is correct |
22 |
Correct |
8 ms |
5284 KB |
Output is correct |
23 |
Correct |
7 ms |
5324 KB |
Output is correct |
24 |
Correct |
7 ms |
5388 KB |
Output is correct |
25 |
Correct |
7 ms |
5324 KB |
Output is correct |
26 |
Correct |
7 ms |
5324 KB |
Output is correct |
27 |
Correct |
7 ms |
5284 KB |
Output is correct |
28 |
Correct |
6 ms |
5324 KB |
Output is correct |
29 |
Correct |
7 ms |
5324 KB |
Output is correct |
30 |
Correct |
6 ms |
5292 KB |
Output is correct |
31 |
Correct |
5 ms |
5248 KB |
Output is correct |
32 |
Correct |
7 ms |
5288 KB |
Output is correct |
33 |
Correct |
6 ms |
5452 KB |
Output is correct |
34 |
Correct |
6 ms |
5324 KB |
Output is correct |
35 |
Correct |
6 ms |
5288 KB |
Output is correct |
36 |
Correct |
7 ms |
5324 KB |
Output is correct |
37 |
Correct |
6 ms |
5452 KB |
Output is correct |
38 |
Correct |
7 ms |
5324 KB |
Output is correct |
39 |
Correct |
6 ms |
5324 KB |
Output is correct |
40 |
Correct |
6 ms |
5284 KB |
Output is correct |
41 |
Correct |
4 ms |
5068 KB |
Output is correct |
42 |
Correct |
7 ms |
5288 KB |
Output is correct |
43 |
Correct |
4 ms |
5160 KB |
Output is correct |
44 |
Correct |
4 ms |
4940 KB |
Output is correct |
45 |
Correct |
3 ms |
5020 KB |
Output is correct |
46 |
Correct |
236 ms |
19700 KB |
Output is correct |
47 |
Correct |
240 ms |
19636 KB |
Output is correct |
48 |
Correct |
190 ms |
19760 KB |
Output is correct |
49 |
Correct |
196 ms |
19700 KB |
Output is correct |
50 |
Correct |
208 ms |
19652 KB |
Output is correct |
51 |
Correct |
196 ms |
19756 KB |
Output is correct |
52 |
Correct |
228 ms |
22600 KB |
Output is correct |
53 |
Correct |
230 ms |
22748 KB |
Output is correct |
54 |
Correct |
182 ms |
22688 KB |
Output is correct |
55 |
Correct |
144 ms |
22688 KB |
Output is correct |
56 |
Correct |
230 ms |
22592 KB |
Output is correct |
57 |
Correct |
190 ms |
22652 KB |
Output is correct |
58 |
Correct |
220 ms |
20420 KB |
Output is correct |
59 |
Correct |
246 ms |
20420 KB |
Output is correct |
60 |
Correct |
219 ms |
20484 KB |
Output is correct |
61 |
Correct |
183 ms |
20512 KB |
Output is correct |
62 |
Correct |
150 ms |
20372 KB |
Output is correct |
63 |
Correct |
191 ms |
20676 KB |
Output is correct |
64 |
Correct |
231 ms |
20380 KB |
Output is correct |
65 |
Correct |
226 ms |
20392 KB |
Output is correct |
66 |
Correct |
226 ms |
20384 KB |
Output is correct |
67 |
Correct |
182 ms |
20292 KB |
Output is correct |
68 |
Correct |
203 ms |
20404 KB |
Output is correct |
69 |
Correct |
222 ms |
20344 KB |
Output is correct |
70 |
Correct |
309 ms |
20088 KB |
Output is correct |
71 |
Correct |
221 ms |
20088 KB |
Output is correct |
72 |
Correct |
222 ms |
20292 KB |
Output is correct |
73 |
Correct |
203 ms |
20016 KB |
Output is correct |
74 |
Correct |
174 ms |
20036 KB |
Output is correct |
75 |
Correct |
245 ms |
20164 KB |
Output is correct |
76 |
Correct |
96 ms |
13464 KB |
Output is correct |
77 |
Correct |
146 ms |
17460 KB |
Output is correct |
78 |
Correct |
133 ms |
22544 KB |
Output is correct |
79 |
Correct |
139 ms |
20472 KB |
Output is correct |
80 |
Correct |
130 ms |
15452 KB |
Output is correct |
81 |
Correct |
142 ms |
17464 KB |
Output is correct |
82 |
Correct |
133 ms |
22672 KB |
Output is correct |
83 |
Correct |
138 ms |
20400 KB |
Output is correct |
84 |
Correct |
235 ms |
20020 KB |
Output is correct |
85 |
Correct |
233 ms |
20008 KB |
Output is correct |
86 |
Correct |
229 ms |
20040 KB |
Output is correct |
87 |
Correct |
50 ms |
10564 KB |
Output is correct |
88 |
Correct |
257 ms |
19996 KB |
Output is correct |