Submission #1220315

#	Time	Username	Problem	Language	Result	Execution time	Memory
1220315		KindaGoodGames	Naval battle (CEOI24_battle)	C++20	20 / 100	3094 ms	15332 KiB

Main

#include<bits/stdc++.h>

using namespace std;

#define tiii tuple<int,int,char>
#define pii pair<int,int>
#define pci pair<char,int>

tiii move(tiii t){
    int x,y,d;
    tie(x,y,d) = t;

    if(d == 'N'){
        y--;
    }
    if(d == 'E'){
        x++;
    }
    if(d == 'S'){
        y++;
    }
    if(d == 'W'){
        x--;
    }

    tiii r = {x,y,d};
    return r;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;

    vector<tiii> arr(n);

    for(int i = 0; i < n; i++){
        int x,y;
        char d;
        cin >> x >> y >> d;
        arr[i] = {x,y,d};
    }

    map<pii, pci> pos;

    for(int i = 0; i < n; i++){
        int x,y;
        char d;
        tie(x,y,d) = arr[i];
        pos[{x,y}] = {d,i};
    }

    vector<bool> sunk(n);
    for(int t = 0; t <= 100000; t++){  
        set<pii> bad;
        for(int i = 0; i < n; i++){
            if(sunk[i]) continue;
            int x,y;
            char d; 

            pos.erase({get<0>(arr[i]), get<1>(arr[i])});

            tiii nxt = move(arr[i]); 
            tie(x,y,d) = nxt;

            if(pos.count({x,y})){
                sunk[i] = true;
                sunk[pos[{x,y}].second] = true;
                pos.erase({x,y});
                bad.insert({x,y});
            }else if(bad.count({x,y})){
                sunk[i] = true; 
            }
            else{
                pos[{x,y}] = {d,i};
                arr[i] = {x,y,d};
            }
        } 
    }


    for(auto u : pos){
        cout << u.second.second+1 << endl;
    }
}

• Subtask 0: 0 / 0
• Subtask 1: 0 / 6
• Subtask 2: 12 / 12
• Subtask 3: 8 / 8
• Subtask 4: 0 / 11
• Subtask 5: 0 / 9
• Subtask 6: 0 / 30
• Subtask 7: 0 / 24