Submission #501601

#	Time	Username	Problem	Language	Result	Execution time	Memory
501601		mansur	Money (IZhO17_money)	C++17	45 / 100	386 ms	262148 KiB

money

#include<bits/stdc++.h>	
 
#pragma optimize ("g",on)
#pragma GCC optimize ("inline")
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC optimize ("03")
#pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,avx2,mmx,fma,avx,tune=native")
#pragma comment(linker, "/stack:200000000")

//01001101 01100001 01101011 01101000 01100001  01100111 01100001 01111001 

using namespace std;

#define all(a) a.begin(), a.end()                                                   
#define rall(a) a.rbegin(), a.rend()
#define ll long long
#define pb push_back
#define sz(a) a.size()
#define nl '\n'
#define popb pop_back()                                                                   
#define ld double
#define ull unsigned long long
#define ff first                                         
#define ss second  
#define fix fixed << setprecision
#define pii pair<int, int>                          
#define E exit (0)
#define int long long
 
const int inf = 1e18, N = 5e5 + 1, mod = 998244353;                    

vector<pii> dir = {{1, 0}, {0, 1}, {-1, 0}, {0, -1}};

main() {                                                         
	//freopen("cowrect.in", "r", stdin);                                                                                     
	//freopen("cowrect.out", "w", stdout);                                                                                     
	ios_base::sync_with_stdio(NULL);                                                                                        
	cin.tie(NULL);  
	int n;
	cin >> n;
	int a[n + 1];
	for (int i = 1; i <= n; i++) cin >> a[i];
	vector<int> pref[n + 1], dp(n + 1, inf);
	for (int i = 1; i <= n; i++) {
		pref[i] = pref[i - 1];
		pref[i].pb(a[i]);
		sort(all(pref[i]));
	}
	dp[0] = 0;
	for (int i = 1; i <= n; i++) {
	 	for (int j = i; j >= 1; j--) {
	 		if (j < i && a[j] > a[j + 1]) break;
	 		if (pref[j - 1].empty() || pref[j - 1][0] >= a[i] || pref[j - 1].back() <= a[j]) {
	 			dp[i] = min(dp[i], dp[j - 1] + 1);
	 			continue;
	 		}
	 		for (int s = 0; s < sz(pref[j - 1]) - 1; s++) {
	 			if (pref[j - 1][s] <= a[j] && a[i] <= pref[j - 1][s + 1]) dp[i] = min(dp[i], dp[j - 1] + 1);
            }
	 	}
	}
	cout << dp[n];
}

Compilation message (stderr)

money.cpp:3: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    3 | #pragma optimize ("g",on)
      | 
money.cpp:9: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    9 | #pragma comment(linker, "/stack:200000000")
      | 
money.cpp:35:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   35 | main() {
      | ^~~~
money.cpp: In function 'int main()':
money.cpp:58:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |     for (int s = 0; s < sz(pref[j - 1]) - 1; s++) {
      |                     ~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 20 / 20
• Subtask 4: 0 / 55