Submission #1221799
Source Code Expand
#include <bits/stdc++.h> using namespace std; #ifdef WIN32 #define lld "%I64d" #else #define lld "%lld" #endif #define mp make_pair #define pb push_back #define put(x) { cout << #x << " = "; cout << (x) << endl; } typedef long long ll; typedef long double ld; typedef unsigned long long ull; typedef double db; const int M = 1e6 + 15; const int Q = 1e9 + 7; int a[M]; int dp[M][2]; int main() { srand(time(NULL)); #ifdef LOCAL freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); #endif cin.tie(0); ios_base::sync_with_stdio(0); int n; cin >> n; if (n <= 2) { cout << 1; return 0; } int ans = 1; for (int i = 0; i < n; i++) cin >> a[i]; dp[n - 1][0] = dp[n - 1][1] = 1; for (int i = n - 2; i >= 0; i--) { for (int it = 0; it < 2; it++) { if (a[i] <= a[i + 1]) dp[i][0] = dp[i + 1][0]; else dp[i][0] = 1 + min(dp[i + 1][0], dp[i + 1][1]); if (a[i]>= a[i + 1]) dp[i][1] = dp[i + 1][1]; else dp[i][1] = 1 + min(dp[i + 1][0], dp[i + 1][1]); } } cout << min(dp[0][0], dp[0][1]) << endl; return 0; }
Submission Info
Submission Time | |
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Task | A - Sorted Arrays |
User | ZhNV |
Language | C++14 (GCC 5.4.1) |
Score | 300 |
Code Size | 1201 Byte |
Status | AC |
Exec Time | 13 ms |
Memory | 5120 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 300 / 300 | ||||
Status |
|
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Set Name | Test Cases |
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Sample | sample_01.txt, sample_02.txt, sample_03.txt |
All | sample_01.txt, sample_02.txt, sample_03.txt, sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_01.txt, subtask_1_02.txt, subtask_1_03.txt, subtask_1_04.txt, subtask_1_05.txt, subtask_1_06.txt, subtask_1_07.txt, subtask_1_08.txt, subtask_1_09.txt, subtask_1_10.txt, subtask_1_11.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
sample_01.txt | AC | 2 ms | 2304 KB |
sample_02.txt | AC | 2 ms | 2304 KB |
sample_03.txt | AC | 2 ms | 2304 KB |
subtask_1_01.txt | AC | 8 ms | 2816 KB |
subtask_1_02.txt | AC | 7 ms | 2688 KB |
subtask_1_03.txt | AC | 5 ms | 2560 KB |
subtask_1_04.txt | AC | 13 ms | 5120 KB |
subtask_1_05.txt | AC | 13 ms | 5120 KB |
subtask_1_06.txt | AC | 13 ms | 5120 KB |
subtask_1_07.txt | AC | 13 ms | 5120 KB |
subtask_1_08.txt | AC | 13 ms | 5120 KB |
subtask_1_09.txt | AC | 13 ms | 5120 KB |
subtask_1_10.txt | AC | 1 ms | 256 KB |
subtask_1_11.txt | AC | 1 ms | 256 KB |