Submission #1253600

#	Time	Username	Problem	Language	Result	Execution time	Memory
1253600		mingga	Stone Arranging 2 (JOI23_ho_t1)	C++20	100 / 100	105 ms	12700 KiB

Main

// Author: caption_mingle
#include "bits/stdc++.h"

using namespace std;

#define ln "\n"
#define pb push_back
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int)(x).size())
#define ll long long
const int mod = 1e9 + 7;
const int inf = 2e9;
const int N = 2e5 + 7;
int n, a[N], nxt[N];
map<int, int> mp;

signed main() {
	cin.tie(0) -> sync_with_stdio(0);
	#define task ""
	if(fopen(task ".INP", "r")) {
		freopen(task ".INP", "r", stdin);
		freopen(task ".OUT", "w", stdout);
	}
	cin >> n;
	for(int i = 1; i <= n; i++) cin >> a[i];
	for(int i = n; i > 0; i--) {
		if(mp.count(a[i])) {
			nxt[i] = mp[a[i]];
		}
		mp[a[i]] = i;
	}
	for(int i = 1; i <= n; i++) {
		if(nxt[i]) {
			for(int j = i; j < nxt[i]; j++) {
				a[j] = a[i];
			}
			i = nxt[i] - 1;
		}
	}
	for(int i = 1; i <= n; i++) cout << a[i] << ln; 
    cerr << "\nTime: " << clock() * 1000 / CLOCKS_PER_SEC;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:23:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |                 freopen(task ".INP", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:24:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |                 freopen(task ".OUT", "w", stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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