Submission #977454

#	Time	Username	Problem	Language	Result	Execution time	Memory
977454		shoryu386	Money (IZhO17_money)	C++17	45 / 100	1526 ms	34728 KiB

money

#include <bits/stdc++.h>
using namespace std;

#define int long long

main(){ ios_base::sync_with_stdio(0); cin.tie(0);
	
	int n; cin >> n;
	//attempt greedy
	
	int arr[n]; for (int x = 0; x < n; x++) cin >> arr[x];
	
	vector<int> dc[1000007];
	for (int x = 0; x < n; x++){
		dc[arr[x]].push_back(x);
	}
	
	bitset<1000007> taken;
	
	set<int> valuesTaken;
	
	for (int zzz = 1; zzz <= n; zzz++){
		
		int smIndex = -1; 
		for (int x = 0; x < n; x++){
			if (!taken[x]){
				smIndex = x;
				break;
			}
		}
		
		int lastVal = arr[smIndex];
		taken[smIndex] = 1;
		vector<int> newval; newval.push_back(arr[smIndex]);
		for (int z = smIndex+1; z < n; z++){
			if (taken[z] || lastVal > arr[z]) break;
			
			bool die = false;
			for (auto y : valuesTaken){
				if (arr[smIndex] < y && y < arr[z]){
					die = true;
					break;
				}
			}
			if (die) break;
			
			taken[z] = 1;
			lastVal = arr[z];
			newval.push_back(arr[z]);
		} 
		
		for (auto y : newval){
			valuesTaken.insert(y);
		}
		
		bool allTaken = true;
		for (int x = 0; x < n; x++) if (!taken[x]) allTaken = false;
		
		if (allTaken){
			cout << zzz;
			return 0;
		}
	}
	
	
}

Compilation message (stderr)

money.cpp:6:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    6 | main(){ ios_base::sync_with_stdio(0); cin.tie(0);
      | ^~~~

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