Submission #710376

#	Time	Username	Problem	Language	Result	Execution time	Memory
710376		shoryu386	Money (IZhO17_money)	C++17	0 / 100	1 ms	292 KiB

money

#include <bits/stdc++.h>
using namespace std;
 
 
 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
 
template <typename T>
using pbds_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
template <typename K, typename V>
using pbds_map = tree<K, V, less<K>, rb_tree_tag, tree_order_statistics_node_update>;
 
template <typename T>
using pbds_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
 
template <typename K, typename V>
using pbds_multimap = tree<K, V, less_equal<K>, rb_tree_tag, tree_order_statistics_node_update>;
//FOR PBDS MULTISET/MAP, LOWER BOUND SWAPS WITH UPPER BOUND IN FUNCTION
 
 #define int long long
main(){
	int n; cin >> n;
	int arr[n]; for (int x= 0; x < n;x ++) cin >> arr[x];
	
	vector<vector<int>> subsegs;
	pbds_multiset<int> used;
	vector<int> curSubseg;
	for (int x = 0; x < n; x++){
		//no ele in between curval + 1 and arr[x]-1 inclusive
		//curval+1 <= x <= arr[x]-1
		//curval <  x  < arr[x]
		if (curSubseg.empty() || (curSubseg.back() <= arr[x] && used.order_of_key(curSubseg[0]+1) == used.order_of_key(max(curSubseg.back(), arr[x])))) curSubseg.push_back(arr[x]);
		else{
			for (auto i : curSubseg) used.insert(i);
			subsegs.push_back(curSubseg), curSubseg.clear();
			curSubseg.push_back(arr[x]);
		}
	}
	if (!curSubseg.empty()) subsegs.push_back(curSubseg);
	
	cout << subsegs.size();
	
	
}

Compilation message (stderr)

money.cpp:24:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   24 | main(){
      | ^~~~

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