//#pragma GCC optimize("O3")
//#pragma GCC target("avx2")
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <map>
#include <set>
#include <queue>
#include <unordered_map>
using namespace std;
#define fastInp cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
typedef long long ll;
typedef long double ld;
#define int ll
const ll SZ = 1e6 + 10, INF = 1e9;
ll n, m, q;
vector<ll> vec;
ll cnt_all[SZ], cnt[SZ], nxt[SZ], pr[SZ];
signed main() {
fastInp;
cin >> n;
vec.resize(n);
ll ans = 0;
for (auto& c : vec) cin >> c;
multiset<ll> er;
vector<ll> vec2;
for (int i = 0; i < n; i++) {
er.insert(vec[i]);
vec2.push_back(vec[i]);
cnt_all[vec[i]]++;
}
sort(vec2.begin(), vec2.end());
auto it = unique(vec2.begin(), vec2.end());
vec2.erase(it, vec2.end());
for (int i = 0; i < vec2.size(); i++) {
if (i > 0) {
pr[vec2[i]] = vec2[i - 1];
}
if (i < vec2.size() - 1) {
nxt[vec2[i]] = vec2[i + 1];
}
}
er.insert(INF);
//if (er.size() != n + 1) return 1;
while (vec.size()) {
ans++;
ll cur = vec.back();
vector<ll> ltr;
ltr.push_back(cur);
vec.pop_back();
ll ths = 1;
cnt[cur]++;
while (vec.size() > 0) {
if (vec.back() == cur) {
ltr.push_back(vec.back());
cur = vec.back();
cnt[cur]++;
vec.pop_back();
continue;
}
ll q = nxt[vec.back()];
if (vec.size() > 0 && q == cur && (ths == 1 || cnt[cur] == cnt_all[cur])) {
ltr.push_back(vec.back());
cur = vec.back();
cnt[cur]++;
vec.pop_back();
ths++;
} else {
break;
}
}
for (auto c : ltr) {
if (cnt[c] == cnt_all[c]) {
pr[nxt[c]] = pr[c];
nxt[pr[c]] = nxt[c];
}
}
}
//if (er.size() != 1) return 1;
cout << ans;
return 0;
}
Compilation message
money.cpp: In function 'int main()':
money.cpp:48:23: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
48 | for (int i = 0; i < vec2.size(); i++) {
| ~~^~~~~~~~~~~~~
money.cpp:52:15: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
52 | if (i < vec2.size() - 1) {
| ~~^~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
0 ms |
332 KB |
Output is correct |
3 |
Correct |
0 ms |
332 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
0 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
460 KB |
Output is correct |
16 |
Correct |
0 ms |
460 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
0 ms |
332 KB |
Output is correct |
3 |
Correct |
0 ms |
332 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
0 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
460 KB |
Output is correct |
16 |
Correct |
0 ms |
460 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
0 ms |
460 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
460 KB |
Output is correct |
22 |
Correct |
0 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
0 ms |
332 KB |
Output is correct |
25 |
Correct |
1 ms |
588 KB |
Output is correct |
26 |
Correct |
0 ms |
460 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
0 ms |
332 KB |
Output is correct |
3 |
Correct |
0 ms |
332 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
0 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
460 KB |
Output is correct |
16 |
Correct |
0 ms |
460 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
0 ms |
460 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
460 KB |
Output is correct |
22 |
Correct |
0 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
0 ms |
332 KB |
Output is correct |
25 |
Correct |
1 ms |
588 KB |
Output is correct |
26 |
Correct |
0 ms |
460 KB |
Output is correct |
27 |
Correct |
0 ms |
332 KB |
Output is correct |
28 |
Correct |
0 ms |
332 KB |
Output is correct |
29 |
Correct |
0 ms |
332 KB |
Output is correct |
30 |
Correct |
1 ms |
332 KB |
Output is correct |
31 |
Correct |
0 ms |
332 KB |
Output is correct |
32 |
Correct |
1 ms |
460 KB |
Output is correct |
33 |
Correct |
1 ms |
460 KB |
Output is correct |
34 |
Correct |
1 ms |
460 KB |
Output is correct |
35 |
Correct |
1 ms |
332 KB |
Output is correct |
36 |
Correct |
1 ms |
332 KB |
Output is correct |
37 |
Correct |
2 ms |
2764 KB |
Output is correct |
38 |
Correct |
2 ms |
2764 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
0 ms |
332 KB |
Output is correct |
3 |
Correct |
0 ms |
332 KB |
Output is correct |
4 |
Correct |
0 ms |
332 KB |
Output is correct |
5 |
Correct |
0 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
0 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
332 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
0 ms |
332 KB |
Output is correct |
15 |
Correct |
0 ms |
460 KB |
Output is correct |
16 |
Correct |
0 ms |
460 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
0 ms |
460 KB |
Output is correct |
19 |
Correct |
1 ms |
332 KB |
Output is correct |
20 |
Correct |
1 ms |
332 KB |
Output is correct |
21 |
Correct |
1 ms |
460 KB |
Output is correct |
22 |
Correct |
0 ms |
332 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
0 ms |
332 KB |
Output is correct |
25 |
Correct |
1 ms |
588 KB |
Output is correct |
26 |
Correct |
0 ms |
460 KB |
Output is correct |
27 |
Correct |
0 ms |
332 KB |
Output is correct |
28 |
Correct |
0 ms |
332 KB |
Output is correct |
29 |
Correct |
0 ms |
332 KB |
Output is correct |
30 |
Correct |
1 ms |
332 KB |
Output is correct |
31 |
Correct |
0 ms |
332 KB |
Output is correct |
32 |
Correct |
1 ms |
460 KB |
Output is correct |
33 |
Correct |
1 ms |
460 KB |
Output is correct |
34 |
Correct |
1 ms |
460 KB |
Output is correct |
35 |
Correct |
1 ms |
332 KB |
Output is correct |
36 |
Correct |
1 ms |
332 KB |
Output is correct |
37 |
Correct |
2 ms |
2764 KB |
Output is correct |
38 |
Correct |
2 ms |
2764 KB |
Output is correct |
39 |
Correct |
232 ms |
30480 KB |
Output is correct |
40 |
Correct |
452 ms |
50044 KB |
Output is correct |
41 |
Correct |
175 ms |
24748 KB |
Output is correct |
42 |
Correct |
184 ms |
22072 KB |
Output is correct |
43 |
Correct |
128 ms |
15796 KB |
Output is correct |
44 |
Correct |
557 ms |
63060 KB |
Output is correct |
45 |
Correct |
516 ms |
63088 KB |
Output is correct |
46 |
Correct |
545 ms |
63120 KB |
Output is correct |
47 |
Correct |
416 ms |
63108 KB |
Output is correct |
48 |
Correct |
438 ms |
63024 KB |
Output is correct |
49 |
Correct |
862 ms |
94240 KB |
Output is correct |
50 |
Correct |
860 ms |
94284 KB |
Output is correct |
51 |
Correct |
921 ms |
94268 KB |
Output is correct |
52 |
Correct |
870 ms |
94180 KB |
Output is correct |
53 |
Correct |
879 ms |
94244 KB |
Output is correct |
54 |
Correct |
864 ms |
94288 KB |
Output is correct |
55 |
Correct |
1297 ms |
94240 KB |
Output is correct |
56 |
Correct |
1293 ms |
101120 KB |
Output is correct |
57 |
Correct |
1324 ms |
101004 KB |
Output is correct |
58 |
Correct |
1369 ms |
101020 KB |
Output is correct |
59 |
Correct |
1325 ms |
100944 KB |
Output is correct |
60 |
Correct |
1312 ms |
100936 KB |
Output is correct |
61 |
Correct |
1308 ms |
100952 KB |
Output is correct |
62 |
Correct |
1345 ms |
100956 KB |
Output is correct |