#include <bits/stdc++.h>
#define int long long
using namespace std;
int n, m, q;
signed main() {
cin >> n >> m >> q;
vector<int> k(m);
for (int i=0; i<m; i++)cin >> k[i];
for (int i=0; i<q; i++) {
int x, y; cin >> x >> y;
int d = min(abs(x-y), abs(x+2*n-y));
int de=1;
if (x>n)de += abs(x-n-y);
else de += abs(x+n-y);
cout << min(de, d)<< endl;
}
}
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