Submission #1058043

#	Time	Username	Problem	Language	Result	Execution time	Memory
1058043		kachim2	Circle Passing (EGOI24_circlepassing)	C++17	0 / 100	335 ms	1048576 KiB

Main

#include<bits/stdc++.h>
using namespace std;
struct player{
int cr, cl;
int bm = -1;
};
 
int main(){
    int n, m, q, pbm;
    cin >> n >> m >> q;
    vector<player> v(n*2);
    auto pos = [n](int x){
        return ((x)+2*n)%(2*n);
    };
    for(int i = 0; i < m; i++){
        int x;
        cin >> x;
        int y = pos(x+n);
        v[x].bm=y;
        v[y].bm=x;
        pbm = x;

    }
    int cur = pbm;
    for(int i = 0; i <= 2*n; i++){
        cur = pos(cur+1);
        if(v[cur].bm!=-1)pbm = cur;
        v[cur].cr=pbm;
    }
    cur = pbm;
    for(int i = 2*n; i >=0 ; i--){
        cur = pos(cur-1);
        if(v[cur].bm!=-1)pbm = cur;
        v[cur].cl=pbm;
    }

    auto dist = [n, &pos](int x, int y){
        return min(pos(x-y), pos(y-x));
    };
    
    while(q--){
        int x, y;
        cin >> x >> y;

        int bd = dist(x, y);
        bd = min(dist(x, v[x].cl)+dist(v[x].cl+n, y)+1, bd);
        bd = min(dist(x, v[x].cr)+dist(v[x].cr+n, y)+1, bd);

        cout << bd << '\n';
    }

}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:28:18: warning: 'pbm' may be used uninitialized in this function [-Wmaybe-uninitialized]
   28 |         v[cur].cr=pbm;

• Subtask 1: 0 / 14
• Subtask 2: 0 / 20
• Subtask 3: 0 / 22
• Subtask 4: 0 / 17
• Subtask 5: 0 / 27