#include <bits/stdc++.h>
#define pb push_back
#define LINE "-----------------\n"
#define ALL(x) x.begin(),x.end()
using namespace std;
int n, m;
const int N = 1e6 + 5;
const int M = 1e6 + 1;
int cnt[N], nx[N], pv[N];
int nn, mm, x, i, ans, j, curCnt, a, b;
signed main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> n;
int nums[n+1], sorted[n+1];
for (i = 0; i < n; i++) {
cin >> x;
cnt[x]++;
nums[nn++] = x;
}
for (i = 1; i < M; i++)
if (cnt[i] > 0) sorted[mm++] = i;
nx[0] = sorted[0];
pv[sorted[0]] = 0;
nx[sorted[mm-1]] = M;
pv[M] = sorted[mm-1];
for (i = 0; i < mm-1; i++) {
nx[sorted[i]] = sorted[i+1];
pv[sorted[i+1]] = sorted[i];
}
for (i = n - 1; i >= 0; i--) {
curCnt = 1;
bool border = 1;
for (j = i-1; j >= 0; j--) {
if (nums[j] == nums[j+1]) {
curCnt++;
continue;
} else {
if ((nx[nums[j]] != nums[j+1]) || (!border && curCnt != cnt[nums[j+1]])) break;
cnt[nums[j+1]] -= curCnt;
if (cnt[nums[j+1]] == 0) {
a = pv[nums[j+1]], b = nx[nums[j+1]];
nx[a] = b;
pv[b] = a;
}
border = 0;
curCnt = 1;
}
}
cnt[nums[j+1]] -= curCnt;
if (cnt[nums[j+1]] == 0) {
a = pv[nums[j+1]], b = nx[nums[j+1]];
nx[a] = b;
pv[b] = a;
}
ans++;
i = j+1;
}
cout << ans << '\n';
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
332 KB |
Output is correct |
| 2 |
Correct |
2 ms |
332 KB |
Output is correct |
| 3 |
Correct |
2 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
2 ms |
324 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
2 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
2 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
2 ms |
332 KB |
Output is correct |
| 12 |
Correct |
2 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
2 ms |
332 KB |
Output is correct |
| 15 |
Correct |
2 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
332 KB |
Output is correct |
| 2 |
Correct |
2 ms |
332 KB |
Output is correct |
| 3 |
Correct |
2 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
2 ms |
324 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
2 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
2 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
2 ms |
332 KB |
Output is correct |
| 12 |
Correct |
2 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
2 ms |
332 KB |
Output is correct |
| 15 |
Correct |
2 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
3 ms |
332 KB |
Output is correct |
| 21 |
Correct |
3 ms |
460 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
2 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
2 ms |
460 KB |
Output is correct |
| 26 |
Correct |
2 ms |
460 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
332 KB |
Output is correct |
| 2 |
Correct |
2 ms |
332 KB |
Output is correct |
| 3 |
Correct |
2 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
2 ms |
324 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
2 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
2 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
2 ms |
332 KB |
Output is correct |
| 12 |
Correct |
2 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
2 ms |
332 KB |
Output is correct |
| 15 |
Correct |
2 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
3 ms |
332 KB |
Output is correct |
| 21 |
Correct |
3 ms |
460 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
2 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
2 ms |
460 KB |
Output is correct |
| 26 |
Correct |
2 ms |
460 KB |
Output is correct |
| 27 |
Correct |
1 ms |
332 KB |
Output is correct |
| 28 |
Correct |
1 ms |
332 KB |
Output is correct |
| 29 |
Correct |
2 ms |
332 KB |
Output is correct |
| 30 |
Correct |
2 ms |
332 KB |
Output is correct |
| 31 |
Correct |
2 ms |
332 KB |
Output is correct |
| 32 |
Correct |
2 ms |
332 KB |
Output is correct |
| 33 |
Correct |
2 ms |
332 KB |
Output is correct |
| 34 |
Correct |
2 ms |
332 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 |
1996 KB |
Output is correct |
| 38 |
Correct |
2 ms |
1996 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
332 KB |
Output is correct |
| 2 |
Correct |
2 ms |
332 KB |
Output is correct |
| 3 |
Correct |
2 ms |
332 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
2 ms |
324 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
2 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
2 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
2 ms |
332 KB |
Output is correct |
| 12 |
Correct |
2 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
2 ms |
332 KB |
Output is correct |
| 15 |
Correct |
2 ms |
332 KB |
Output is correct |
| 16 |
Correct |
1 ms |
332 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
1 ms |
332 KB |
Output is correct |
| 19 |
Correct |
1 ms |
332 KB |
Output is correct |
| 20 |
Correct |
3 ms |
332 KB |
Output is correct |
| 21 |
Correct |
3 ms |
460 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
2 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
2 ms |
460 KB |
Output is correct |
| 26 |
Correct |
2 ms |
460 KB |
Output is correct |
| 27 |
Correct |
1 ms |
332 KB |
Output is correct |
| 28 |
Correct |
1 ms |
332 KB |
Output is correct |
| 29 |
Correct |
2 ms |
332 KB |
Output is correct |
| 30 |
Correct |
2 ms |
332 KB |
Output is correct |
| 31 |
Correct |
2 ms |
332 KB |
Output is correct |
| 32 |
Correct |
2 ms |
332 KB |
Output is correct |
| 33 |
Correct |
2 ms |
332 KB |
Output is correct |
| 34 |
Correct |
2 ms |
332 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 |
1996 KB |
Output is correct |
| 38 |
Correct |
2 ms |
1996 KB |
Output is correct |
| 39 |
Correct |
44 ms |
4084 KB |
Output is correct |
| 40 |
Correct |
69 ms |
6596 KB |
Output is correct |
| 41 |
Correct |
36 ms |
3396 KB |
Output is correct |
| 42 |
Correct |
31 ms |
3068 KB |
Output is correct |
| 43 |
Correct |
22 ms |
2380 KB |
Output is correct |
| 44 |
Correct |
88 ms |
8164 KB |
Output is correct |
| 45 |
Correct |
87 ms |
8156 KB |
Output is correct |
| 46 |
Correct |
95 ms |
8168 KB |
Output is correct |
| 47 |
Correct |
89 ms |
8152 KB |
Output is correct |
| 48 |
Correct |
87 ms |
8152 KB |
Output is correct |
| 49 |
Correct |
130 ms |
19892 KB |
Output is correct |
| 50 |
Correct |
126 ms |
19780 KB |
Output is correct |
| 51 |
Correct |
134 ms |
20076 KB |
Output is correct |
| 52 |
Correct |
130 ms |
19780 KB |
Output is correct |
| 53 |
Correct |
121 ms |
19800 KB |
Output is correct |
| 54 |
Correct |
122 ms |
19848 KB |
Output is correct |
| 55 |
Correct |
147 ms |
19752 KB |
Output is correct |
| 56 |
Correct |
158 ms |
19848 KB |
Output is correct |
| 57 |
Correct |
146 ms |
19856 KB |
Output is correct |
| 58 |
Correct |
153 ms |
19780 KB |
Output is correct |
| 59 |
Correct |
150 ms |
19860 KB |
Output is correct |
| 60 |
Correct |
150 ms |
19844 KB |
Output is correct |
| 61 |
Correct |
147 ms |
19848 KB |
Output is correct |
| 62 |
Correct |
146 ms |
19860 KB |
Output is correct |
