Submission #774693

#	Time	Username	Problem	Language	Result	Execution time	Memory
774693		vjudge1	Stone Arranging 2 (JOI23_ho_t1)	C++17	0 / 100	1 ms	1108 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define foru(i,a,b) for(int i = a; i <= b; ++i)
#define ford(i,a,b) for(int i = a; i >= b; --i)
#define vt vector
#define endl '\n'
const int N = 200005;
int n;
int x;
int col[N];
int a[N];
int s[N];
int e[N];
int cnt;
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
	cin >> n;
	memset(col,-1,sizeof col);
	foru(i,0,n-1){
		cin >> a[i];
	}
	ford(i,n-1,0){
		if(col[a[i]] == -1){
			col[a[i]] = i;
			s[i] = i;
			e[i] = i;
		} else {
			s[i] = i;
			e[i] = col[a[i]];
			col[a[i]] = i;
		}
	}
	int p = 0;
	bool ok = 0;
	while(p < n-1){
		cnt = e[p] - s[p] + 1;
		if(!ok){
			foru(i,1,cnt){
				cout << a[p] << endl;
			}	
		} else {
			foru(i,1,cnt-1){
				cout << a[p] << endl;
			}
		}
		p += cnt;
		if(cnt > 1){
			p -= 1;
			ok = 1;
		} else {
			ok = 0;
		}
	}
    return 0;
}

• Subtask 1: 0 / 25
• Subtask 2: 0 / 35
• Subtask 3: 0 / 40