Submission #1453314
Source Code Expand
#include <bits/stdc++.h> using namespace std; typedef long long ll; int main() { #ifdef HOME assert(freopen("in", "r", stdin)); #endif int n; while (scanf("%d", &n) == 1) { vector<int> a(n); vector<int> pos(n); for (int i = 0; i < n; i++) { scanf("%d", &a[i]); --a[i]; pos[a[i]] = i; } vector<int> frst(1, n - 1); for (int i = n - 2; i >= 0; i--) { bool nw = 0; if (frst.size() == 1) { nw = pos[i] > pos[frst.back()]; } else { int p1 = pos[i]; int p2 = pos[frst.back()]; int p3 = pos[frst[(int)frst.size() - 2]]; if ((p2 > p3) != (p1 > p3)) nw = p1 < p2; else nw = p1 > p2; } if (nw) frst.push_back(i); else frst.back()--; } printf("%d\n", (int)frst.size() - 1); } #ifdef HOME cerr << "time: " << clock() * 1.0 / CLOCKS_PER_SEC << endl; #endif return 0; }
Submission Info
Submission Time | |
---|---|
Task | F - Strange Sorting |
User | izban |
Language | C++14 (GCC 5.4.1) |
Score | 2400 |
Code Size | 1102 Byte |
Status | AC |
Exec Time | 27 ms |
Memory | 2936 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:18:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[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 | 25 ms | 2936 KB |
in10.txt | AC | 27 ms | 2936 KB |
in11.txt | AC | 25 ms | 2936 KB |
in12.txt | AC | 25 ms | 2936 KB |
in13.txt | AC | 25 ms | 2936 KB |
in14.txt | AC | 25 ms | 2936 KB |
in15.txt | AC | 25 ms | 2936 KB |
in16.txt | AC | 25 ms | 2936 KB |
in17.txt | AC | 25 ms | 2936 KB |
in18.txt | AC | 25 ms | 2936 KB |
in19.txt | AC | 25 ms | 2936 KB |
in2.txt | AC | 25 ms | 2936 KB |
in20.txt | AC | 25 ms | 2936 KB |
in21.txt | AC | 21 ms | 1792 KB |
in22.txt | AC | 22 ms | 2936 KB |
in23.txt | AC | 1 ms | 256 KB |
in3.txt | AC | 25 ms | 2936 KB |
in4.txt | AC | 25 ms | 2936 KB |
in5.txt | AC | 25 ms | 2936 KB |
in6.txt | AC | 25 ms | 2936 KB |
in7.txt | AC | 25 ms | 2936 KB |
in8.txt | AC | 25 ms | 2936 KB |
in9.txt | AC | 25 ms | 2936 KB |
sample1.txt | AC | 1 ms | 256 KB |
sample2.txt | AC | 1 ms | 256 KB |
sample3.txt | AC | 1 ms | 256 KB |