Submission #1065338

#	Time	Username	Problem	Language	Result	Execution time	Memory
1065338		Dan4Life	Circle Passing (EGOI24_circlepassing)	C++17	100 / 100	54 ms	9552 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int mxN = (int)1e6+10;
int n, m, q;
int k[mxN];

int dis(int a, int b){ return min(abs(a-b), n*2-abs(a-b)); }
int getDis(int a, int K, int b){
    return min(dis(a,K)+1+dis(K+n,b), dis(a,K+n)+1+dis(K,b));
}

int32_t main(){
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> n >> m >> q;
    for(int i = 0; i < m; i++) cin >> k[i];
    while(q--){
        int a, b; cin >> a >> b;
        if(a>b) swap(a,b);
        int ans = dis(a,b);
        int pos = lower_bound(k,k+m,a)-k;
        int tot = min(m, (int)1e4/2); int tot2 = tot;
        if(pos==m) pos=0;
        ans = min(ans, getDis(a,k[pos],b));
        if(pos==0) pos=m-1;
        else pos--;
        ans = min(ans, getDis(a,k[pos],b));
        cout << ans << "\n";
    }
}

Compilation message (stderr)

Main.cpp: In function 'int32_t main()':
Main.cpp:22:43: warning: unused variable 'tot2' [-Wunused-variable]
   22 |         int tot = min(m, (int)1e4/2); int tot2 = tot;
      |                                           ^~~~

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