oj.uz

Submission #1087760

# Submission time Handle Problem Language Result Execution time Memory
1087760 2024-09-13T08:00:18 Z mychecksedad Sprinklers (CEOI24_sprinklers) C++17
9 / 100
 56 ms 5156 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define pb push_back
#define en cout << '\n'
#define vi vector<int>
#define pii pair<int, int>
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
const int N = 1e5+100;


int n, m, a[N], b[N];
void solve(){
	cin >> n >> m;
	vector<pii> v;
	for(int i = 1; i <= n; ++i){
		cin >> a[i];
		v.pb({a[i], 1});
	}
	for(int i = 1; i <= m; ++i){
		cin >> b[i];
		v.pb({b[i], 0});
	}
	sort(all(v));
	string soll;
	int l = 0, r = 1e9, ans = -1;
	while(l <= r){
		int k = l+r>>1;
		string sol = "";
		bool ok = 1;
		int last = -1e9, last_not_covered = 2e9;
		for(int i = 0; i < n+m; ++i){
			if(v[i].ss == 0){
				if(last >= v[i].ff){
					continue;
				}
				last_not_covered = min(last_not_covered, v[i].ff);
			}else{
				if(last_not_covered != 2e9 && last_not_covered < v[i].ff){
					if(v[i].ff - last_not_covered > k){
						ok = 0;
						break;
					}
					last_not_covered = 2e9;
					sol += 'L';
				}else{
					last_not_covered = 2e9;
					last = v[i].ff + k;
					sol += 'R';
				}
			}
		}
		if(last_not_covered != 2e9) ok = 0;

		if(ok){
			ans = k;
			soll = sol;
			r = k - 1;
		}else{
			l = k + 1;
		}
	}

	cout << ans << '\n';
	if(ans != -1){
		cout << soll;
	}
}

int main(){
	cin.tie(0); ios::sync_with_stdio(0);
	solve();
	return 0;
}

Compilation message

Main.cpp: In function 'void solve()':
Main.cpp:30:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   30 |   int k = l+r>>1;
      |           ~^~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Correct
2 Correct 0 ms 344 KB Correct

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Correct
2 Correct 10 ms 2520 KB Correct
3 Correct 1 ms 348 KB Correct
4 Correct 11 ms 2648 KB Correct
5 Correct 11 ms 2780 KB Correct
6 Correct 0 ms 348 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 3 ms 1116 KB Correct
9 Correct 0 ms 348 KB Correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Correct
2 Correct 22 ms 2780 KB Correct
3 Correct 3 ms 860 KB Correct
4 Correct 53 ms 5120 KB Correct
5 Correct 50 ms 5012 KB Correct
6 Correct 1 ms 344 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 30 ms 5088 KB Correct
9 Correct 28 ms 4964 KB Correct
10 Correct 52 ms 5156 KB Correct
11 Correct 16 ms 3032 KB Correct
12 Correct 21 ms 3288 KB Correct
13 Correct 33 ms 4156 KB Correct
14 Correct 32 ms 4308 KB Correct
15 Correct 34 ms 4312 KB Correct
16 Correct 32 ms 4052 KB Correct

Subtask #3
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Correct
2 Correct 0 ms 344 KB Correct
3 Correct 0 ms 348 KB Correct
4 Correct 0 ms 348 KB Correct
5 Incorrect 1 ms 344 KB User solution is worse than jury's solution
6 Halted 0 ms 0 KB -

Subtask #4
0.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Correct
2 Correct 20 ms 2956 KB Correct
3 Incorrect 56 ms 5072 KB User solution is worse than jury's solution
4 Halted 0 ms 0 KB -

Subtask #5
0.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Correct
2 Correct 0 ms 344 KB Correct
3 Correct 10 ms 2520 KB Correct
4 Correct 1 ms 348 KB Correct
5 Correct 11 ms 2648 KB Correct
6 Correct 11 ms 2780 KB Correct
7 Correct 0 ms 348 KB Correct
8 Correct 0 ms 348 KB Correct
9 Correct 3 ms 1116 KB Correct
10 Correct 0 ms 348 KB Correct
11 Correct 22 ms 2780 KB Correct
12 Correct 3 ms 860 KB Correct
13 Correct 53 ms 5120 KB Correct
14 Correct 50 ms 5012 KB Correct
15 Correct 1 ms 344 KB Correct
16 Correct 0 ms 348 KB Correct
17 Correct 30 ms 5088 KB Correct
18 Correct 28 ms 4964 KB Correct
19 Correct 52 ms 5156 KB Correct
20 Correct 16 ms 3032 KB Correct
21 Correct 21 ms 3288 KB Correct
22 Correct 33 ms 4156 KB Correct
23 Correct 32 ms 4308 KB Correct
24 Correct 34 ms 4312 KB Correct
25 Correct 32 ms 4052 KB Correct
26 Correct 0 ms 348 KB Correct
27 Correct 0 ms 348 KB Correct
28 Incorrect 1 ms 344 KB User solution is worse than jury's solution
29 Halted 0 ms 0 KB -