#include <iostream>
#include <string>
#include <queue>
#include <stack>
#include <algorithm>
#include <list>
#include <vector>
#include <complex>
#include <utility>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <climits>
#include <bitset>
#include <ctime>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <cassert>
#include <cstddef>
#include <iomanip>
#include <numeric>
#include <tuple>
#include <sstream>
#include <fstream>

using namespace std;
#define REP(i, n) for (int (i) = 0; (i) < (n); (i)++)
#define FOR(i, a, b) for (int (i) = (a); (i) < (b); (i)++)
#define RREP(i, a) for(int (i) = (a) - 1; (i) >= 0; (i)--)
#define FORR(i, a, b) for(int (i) = (a) - 1; (i) >= (b); (i)--)
#define DEBUG(C) cerr << #C << " = " << C << endl;
using LL = long long;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<LL>;
using VVL = vector<VL>;
using VD = vector<double>;
using VVD = vector<VD>;
using PII = pair<int, int>;
using PDD = pair<double, double>;
using PLL = pair<LL, LL>;
using VPII = vector<PII>;
#define ALL(a) begin((a)), end((a))
#define RALL(a) rbegin((a)), rend((a))
#define SORT(a) sort(ALL((a)))
#define RSORT(a) sort(RALL((a)))
#define REVERSE(a) reverse(ALL((a)))
#define MP make_pair
#define FORE(a, b) for (auto &&a : (b))
#define FIND(s, e) ((s).find(e) != (s).end())
#define EB emplace_back

const int INF = 1e9;
const int MOD = INF + 7;
const LL LLINF = 1e18;

void solve(int m, int nmi, int nma) {
    VI P(m);
    REP(i, m) cin >> P[i];
    RSORT(P);
    P.EB(0);
    PII ans = MP(abs(P[nmi] - P[nmi - 1]), nmi);
    FOR(i, nmi, nma) {
        int dif = abs(P[i] - P[i + 1]);
        if (dif >= ans.first) {
            ans = MP(dif, i + 1);
        }
    }
    cout << ans.second << endl;
}

signed main(void) {
    int n, m, p, a, b, c, x, y, z, q;
    string s;
    while (cin >> m >> a >> b, m) {
        solve(m, a, b);
        //return 0;
    }
}
#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;

char convNext(char ch) {
	if('a' <= ch && ch <= 'y') return ch+1;
	if(ch=='z')return 'a';
	return ch;
}
int main() {
	char str[90];
	while(true) {
		if(!fgets(str, 90, stdin))break;
		for(int i = 0; i < 26; i++) {
			if(strstr(str,"this") || strstr(str,"that") || strstr(str,"the"))break;
			for(int j = 0; str[j]; j++) {
				str[j]=convNext(str[j]);
			}
		}
		fputs(str, stdout);
	}
	return 0;
}