Submission #1220929

#	Time	Username	Problem	Language	Result	Execution time	Memory
1220929		KindaGoodGames	Sprinklers (CEOI24_sprinklers)	C++20	20 / 100	2097 ms	1608 KiB

Main

#include<bits/stdc++.h>

using namespace std;

#define int long long

int INF = numeric_limits<int>::max()/2;

int32_t main(){
    int n,m;
    cin >> n >> m;
    vector<int> spr(n);
    vector<int> flow(m);

    for(int i = 0; i < n; i++){
        cin >> spr[i];
    }
    for(int i = 0; i < m; i++){
        cin >> flow[i];
    }

    int p2 = 1 << n;

    int mi = INF;
    vector<bool> best(n);

    for(int t = 0; t < p2; t++){
        // true => left
        vector<bool> cur(n);
        set<int> left, right;
        for(int i = 0; i < n; i++){
            if(t & (1 << i)){
                cur[i] = true;
                left.insert(spr[i]);
            }else{
                right.insert(spr[i]);
            }
        }

        int cmax = 0;
        for(int i = 0; i < m; i++){
            auto lit = left.upper_bound(flow[i]);
            auto rit = right.lower_bound(flow[i]);

            int cmi = INF;
            if(lit != left.begin()){
                lit--;
                cmi = min((flow[i]-(*lit)),cmi);
            }
            if(rit != right.end()){
                cmi = min((*rit)-flow[i],cmi);
            }

            cmax = max(cmi,cmax);
        }


        if(cmax < mi){
            mi = cmax;
            best = cur;
        }
    }

    if(mi == INF){
        cout << -1 << endl;
        return 0;
    }

    cout << mi << endl;
    

    for(int i = 0; i < n; i++){
        cout << (best[i] ? "R" : "L");
    }
    cout <<endl;
    
}

• Subtask 0: 0 / 0
• Subtask 1: 3 / 3
• Subtask 2: 0 / 6
• Subtask 3: 17 / 17
• Subtask 4: 0 / 27
• Subtask 5: 0 / 47