Go: // Entrance Examination(入学試験)
// http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=1600&lang=jp
package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

func main() {
	sc := bufio.NewScanner(os.Stdin)
	sc.Split(bufio.ScanWords)

	for {
		m, nMin, nMax := nextInt(sc), nextInt(sc), nextInt(sc)
		if m == 0 && nMin == 0 && nMax == 0 {
			break
		}

		points := []int{}
		for i := 0; i < m; i++ {
			points = append(points, nextInt(sc))
		}

		gapMax, pass := 0, 0
		for n := nMin; n <= nMax; n++ {
			gap := points[n-1] - points[n]
			if gap >= gapMax {
				gapMax, pass = gap, n
			}
		}

		fmt.Println(pass)
	}
}

func nextInt(sc *bufio.Scanner) int {
	sc.Scan()
	i, err := strconv.Atoi(sc.Text())
	if err != nil {
		panic(err)
	}
	return i
}

C++: #include <iostream>
#include <sstream>
#include <vector>
#include <string>
#include <cstring>
#include <algorithm>
#include <queue>
#include <map>
#include <set>

#define REP(i,k,n) for(int i=k;i<n;i++)
#define rep(i,n) for(int i=0;i<n;i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
#define INF 1<<30
#define mp make_pair

using namespace std;
typedef long long ll;
typedef pair<int,int> P;

int main() {
	int n, a, b;
	while(cin >> n >> a >> b) {
		if(n == 0 && a == 0 && b == 0) break;

		vector<int> v(n);
		rep(i, n) cin >> v[i];
		v.push_back(v[n-1]);

		int ans = 0, id = 0;
		REP(i, a, b + 1) {
			if(ans <= v[i-1] - v[i]) {
				ans = v[i-1] - v[i];
				id = i;
			}
		}

		cout << id << endl;
	}
	return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
  int m,s,g,p[200];
  while(cin>>m>>s>>g,m){
    int ans=-1,an;
    for(int i=0;i<m;i++)cin>>p[i];
    sort(p,p+m,greater<int>());
    for(int i=g;i>=s;i--)if(ans<p[i-1]-p[i])ans=p[i-1]-p[i],an=i;
    cout<<an<<endl;
  }
  return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;

using VI = vector<long>;

int main() {
  int m, nmin, nmax;
  while (1) {
    cin >> m >> nmin >> nmax;
    if (m) {
      VI ps;
      for (int i = 0; i < m; i++) {
        long p;
        cin >> p;
        ps.push_back(p);
      }
      long n;
      long maxgap = 0;
      for (int i = nmin; i <= nmax; i++) {
        assert(i - 1 >= 0);
        assert(i < m);
        long gap = ps[i - 1] - ps[i];
        if (gap >= maxgap) {
          maxgap = gap;
          n = i;
        }
      }
      cout << n << endl;
    } else {
      return 0;
    }
  }
}

C++: #include<bits/stdc++.h>
using namespace std;
int m,a,b,p[205],c,d;

int main(){
  while(1){
    cin>>m>>a>>b;
    if(!m&&!a&&!b)break;
    c=d=0;
    for(int i=0;i<m;i++)cin>>p[i];
    for(int i=b-1;i>=a-1;i--)
      if(p[i]-p[i+1]>c)c=p[i]-p[i+1],d=i+1;
    cout<<d<<endl;
  }
  return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
  int a,b,c;
  while(cin>>a>>b>>c,a){
    int p[a];
    for(int i=0;i<a;++i) cin>>p[i];
    sort(p,p+a);
    int x=0, y;
    for(int i=a-b;i>=a-c;--i)
      if(p[i]-p[i-1]>=x) x=p[i]-p[i-1], y=i;
    cout<<a-y<<endl;
  }
  return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;

vector<int> p;

int main(){
while(1){	
	
	int m, mi, ma;
	cin >> m >> mi >> ma;
	if(m == 0 and mi == 0 and ma == 0) break;
	for(int i=0; i<m; i++){
		int tmp;
		cin >> tmp;
		p.push_back(tmp);
	}
	
	sort(p.begin(), p.end());
	reverse(p.begin(), p.end());
	
	int gap = 0;
	int ans = 0;
	for(int i=mi; i <= ma; i++){
		if(gap <= p[i-1] - p[i]){
			gap = p[i-1] - p[i];
			ans = i;
		}
	}
	
	cout << ans << endl;
	p.clear();
	
	
	//debug
	//for(int i=0; i<m; i++) cout << p[i] << endl;

}//end	
	
	return 0;
}

C++: #include <iostream>
#include <cstdio>
#include <vector>
#include <cmath>
#include <cstring>
#include <numeric>
#include <algorithm>
#include <functional>
#include <array>
#include <map>
#include <queue>
#include <limits.h>
#include <set>
#include <stack>

using namespace std;

#define Getsign(n) ((n > 0) - (n < 0))
#define QWERTYR(c) (c == 'y' || c == 'u' || (c >= 'h' && c <= 'p') ?	true : false)
map<string, int> roma_time = { { "I",1 },{ "II",2 },{ "III",3 },{ "IIII",4 },{ "V",5 },{ "VI",6 },{ "VII",7 },{ "VIII",8 },{ "IX",9 },{ "X",10 },{ "XI",11 },{ "XII",12 } };

typedef vector<int> Ivec;
typedef pair<int, int> pii;

int main() {
	int n, Max, Min;
	while (scanf("%d %d %d", &n, &Min, &Max)) {
		if (n == 0)
			return 0;

		vector<int> points;

		for (int i = 0; n > i; i++) {
			int p;
			scanf("%d", &p);
			points.push_back(p);
		}
		int num, Maxim = -1;
		for (int i = Min-1; Max-1 >= i; i++) {
			if (points[i] - points[i + 1] >= Maxim) {
				num = i;
				Maxim = points[i] - points[i + 1];
			}
		}
		printf("%d\n", num + 1);
	}
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;

int main(){
  while(1){
  int m,l,r;
  cin>>m>>l>>r;
  if(!m&&!l&&!r)break;

  int a[300];
  for(int i=0;i<m;i++)cin>>a[i];

  sort(a,a+m);
  reverse(a,a+m);
  int gap=0,n;
  for(int i=l-1;i<r;i++)
    if(a[i]-a[i+1]>=gap)n=i,gap=a[i]-a[i+1];
  
  cout <<n+1<<endl;
  }
  return 0;
}

C++: #include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> P;
typedef vector<ll> V;
typedef complex<double> Point;

#define PI acos(-1.0)
#define EPS 1e-10
const ll INF = 1e16;
const ll MOD = 1e9 + 7;

#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define rep(i,N) for(int i=0;i<(N);i++)
#define ALL(s) (s).begin(),(s).end()
#define EQ(a,b) (abs((a)-(b))<EPS)
#define EQV(a,b) ( EQ((a).real(), (b).real()) && EQ((a).imag(), (b).imag()) )
#define fi first
#define se second
#define N_SIZE (1LL << 20)
#define NIL -1

ll sq(ll num) { return num*num; }
ll mod_pow(ll x, ll n) {
	if (n == 0)return 1;
	if (n == 1)return x%MOD;
	ll res = sq(mod_pow(x, n / 2));
	res %= MOD;
	if (n % 2 == 1) {
		res *= x;
		res %= MOD;
	}
	return res;
}

int main(){
	int M,N_min,N_max;
	while(1){
		cin>>M>>N_min>>N_max;
		if(M==0)break;
		vector<int> p(M);
		for(int i=0;i<M;i++)cin>>p[i];
		int gap=-1,ans=0;
		for(int i=N_max;i>=N_min;i--){
			int tmp=p[i-1]-p[i];
			if(gap<tmp){
				gap=tmp;
				ans=i;
			}
		}
		cout<<ans<<endl;
	}
}

C++: #include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#include <cmath>
#include <cstdio>
//ranker
using namespace std;

#define REPS(i, a, n) for (int i = (a); i < (n); ++i)
#define REP(i, n) REPS(i, 0, n)
#define RREP(i, n) REPS(i, 1, n + 1)
#define DEPS(i, a, n) for (int i = (a); i >= n; --i)
#define DEP(i, n) DEPS(i, n, 0)

using ll = long long;
using ull = unsigned long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using pii = pair<int, int>;
using pis = pair<int, string>;
using psi = pair<string, int>;
using D = double;


int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);

  int M, min, max;

  while(1){
    cin >> M >> min >> max;

    if(M == 0 && min == 0 && max == 0) break;

    int P[M];
    REP(i, M) cin >> P[i];

    int gomi = 0;
    int cnt = 0;
    REPS(i, min-1, max){
      if(gomi <= P[i]-P[i+1]){
      gomi = P[i]-P[i+1];
      cnt = i+1;
      cout << cnt << " " << gomi << endl;
    }
  }
    cout << cnt << endl;
  }

  return 0;
}