Submission #1349764
Source Code Expand
#include <cstdio> const int N = 200000 + 10; int n, p[N], q[N], t[N], f[N]; int main() { scanf("%d", &n); for (int i = 1; i <= n; ++i) scanf("%d", &p[i]), q[p[i]] = i; for (int i = n - 1; i > 0; --i) { if (t[i + 1]) { int cnt = (q[f[i + 1]] < q[i]) + (q[i] < q[i + 1]) + (q[i + 1] < q[f[i + 1]]); if (cnt == 2) { t[i] = t[i + 1]; f[i] = f[i + 1]; } else { t[i] = t[i + 1] + 1; f[i] = i + 1; } } else if (q[i] > q[i + 1]) { t[i] = 1; f[i] = i + 1; } } printf("%d\n", t[1]); return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Strange Sorting |
User | jiaqiyang |
Language | C++14 (GCC 5.4.1) |
Score | 2400 |
Code Size | 607 Byte |
Status | AC |
Exec Time | 23 ms |
Memory | 3328 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:8:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ ./Main.cpp:9:63: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i = 1; i <= n; ++i) scanf("%d", &p[i]), q[p[i]] = i; ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 2400 / 2400 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | sample1.txt, sample2.txt, sample3.txt |
All | sample1.txt, sample2.txt, sample3.txt, in1.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in2.txt, in20.txt, in21.txt, in22.txt, in23.txt, in3.txt, in4.txt, in5.txt, in6.txt, in7.txt, in8.txt, in9.txt, sample1.txt, sample2.txt, sample3.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
in1.txt | AC | 23 ms | 3328 KB |
in10.txt | AC | 23 ms | 3328 KB |
in11.txt | AC | 23 ms | 3328 KB |
in12.txt | AC | 23 ms | 3328 KB |
in13.txt | AC | 23 ms | 3328 KB |
in14.txt | AC | 23 ms | 3328 KB |
in15.txt | AC | 23 ms | 3328 KB |
in16.txt | AC | 23 ms | 3328 KB |
in17.txt | AC | 23 ms | 3328 KB |
in18.txt | AC | 23 ms | 3328 KB |
in19.txt | AC | 23 ms | 3328 KB |
in2.txt | AC | 23 ms | 3328 KB |
in20.txt | AC | 23 ms | 3328 KB |
in21.txt | AC | 20 ms | 1792 KB |
in22.txt | AC | 21 ms | 3328 KB |
in23.txt | AC | 1 ms | 128 KB |
in3.txt | AC | 23 ms | 3328 KB |
in4.txt | AC | 23 ms | 3328 KB |
in5.txt | AC | 23 ms | 3328 KB |
in6.txt | AC | 23 ms | 3328 KB |
in7.txt | AC | 23 ms | 3328 KB |
in8.txt | AC | 23 ms | 3328 KB |
in9.txt | AC | 23 ms | 3328 KB |
sample1.txt | AC | 1 ms | 128 KB |
sample2.txt | AC | 0 ms | 128 KB |
sample3.txt | AC | 1 ms | 128 KB |