Submission #1157938

#	Time	Username	Problem	Language	Result	Execution time	Memory
1157938		SmuggingSpun	Stone Arranging 2 (JOI23_ho_t1)	C++20	100 / 100	216 ms	13388 KiB

Main

#include<bits/stdc++.h>
#define taskname "A"
using namespace std;
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
	int n;
	cin >> n;
	vector<pair<int, int>>ans;
	map<int, bool>cnt;
	for(int _ = 0; _ < n; _++){
		int x;
		cin >> x;
		if(cnt[x]){
			int sum = 1;
			while(ans.back().first != x){
				cnt[ans.back().first] = false;
				sum += ans.back().second;
				ans.pop_back();
			}
			ans.back().second += sum;
		}
		else{
			ans.emplace_back(x, 1);
			cnt[x] = true;
		}
	}
	for(auto& [u, v] : ans){
		for(int i = 0; i < v; i++){
			cout << u << "\n";
		}
	}
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:7:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 25 / 25
• Subtask 2: 35 / 35
• Subtask 3: 40 / 40