Go: package main

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

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

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
		}

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

		// 最低合格者数と最高合格者数の間の各得点間のギャップが最大になる合格者数を取得する
		scoreGap := 0
		scoreGapMax := 0
		qualifiedNum := 0
		for n := nMin; n <= nMax; n++ {
			scoreGap = score_list[n-1] - score_list[n]
			if scoreGap >= scoreGapMax {
				scoreGapMax = scoreGap
				qualifiedNum = n
			}
		}

		fmt.Println(qualifiedNum)
	}
}

C++: #include <bits/stdc++.h>
#define ll long long
#define all(a) (a).begin(),(a).end()

int main(int argc, char const *argv[]) {
  while(1){
    ll m=0,nmin=0,nmax=0;
    scanf("%lld%lld%lld",&m,&nmin,&nmax);
    if(m==0 && nmin==0 && nmax==0){
      break;
    }
    std::vector<ll> p(m);
    for (ll i = 1; i <= m; i++) {
      scanf("%lld",&p[i]);
    }
    ll temp=0,memo=0,memoid=0;
    for (ll i = nmin; i <= nmax; i++) {
      temp=p[i]-p[i+1];
      memo=std::max(memo,temp);
      if(memo==temp) memoid=i;
    }
    printf("%lld\n",memoid);
  }
  return 0;
}

C++: #include <stdio.h>
#include <iostream>
#include <algorithm>
#include <functional>
#include <cstdlib>
#include <sstream>
#include <string>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <deque>
#include <complex>
#include <vector>
#include <cstdio>
#include <cmath>
#include <time.h>
#define all(c) ((c).begin(),(c).end())
#define rall(c) (c).rbegin(),(c).rend()
#define sort(v,n) sort(v,v+n)
#define vsort(v) sort(v.begin(),v.end())
#define vvsort(v) sort(v.begin(),v.end(),greater<int>())
#define ll long long
#define pb(a) push_back(a)
#define fi first
#define se second
#define inf 999999999
using namespace std;
const ll MOD = 1e9 + 7;
const double PI = acos(-1.0);
//---------------------------------------------------------------------------------------------//
int m, nmax, nmin;
int a[210];
int main() {
	while (cin >> m >> nmin >> nmax) {
		if (m == 0)return 0;
		int sa = 0;
		int ansi=nmin;
		for (int i = 0; i < m; i++)cin >> a[i];
		for (int i = nmin ; i <= nmax; i++) {
			int now = sa;
			sa = max(sa, a[i-1] - a[i]);
			if (sa != now)ansi = i;
			if (a[i - 1] - a[i] == now)ansi = i;
		}
		cout << ansi << endl;
	}
}

C++: #include <iostream>
#include <vector>

using std::cin;
using std::cout;
using std::endl;

int main(void) {
	int m,n_min,n_max;
	cin >> m;
	cin >> n_min;
	cin >> n_max;

	while (m!=0||n_min!=0||n_max!=0) {
		std::vector<int> p(m);
		int num_p = n_min;
		int gap_max;
		int gap;
		for (int i = 0; i < m; i++) {
			cin >> p[i];
		}
		gap_max = p[n_min-1] - p[n_min];	
		for (int i = n_min+1; i < n_max+1; i++) {
			gap = p[i-1] - p[i];	
			if (gap >= gap_max) {
				gap_max = gap;
				num_p = i;
			}
		}
		cout << num_p << endl;

		cin >> m;
		cin >> n_min;
		cin >> n_max;
	}
	return 0;
}

C++: #include"bits/stdc++.h"

#define FOR(i,a,b) for (ll i=(a),__last_##i=(b);i<__last_##i;i++)
#define RFOR(i,a,b) for (ll i=(b)-1,__last_##i=(a);i>=__last_##i;i--)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) RFOR(i,0,n)
#define __GET_MACRO3(_1, _2, _3, NAME, ...) NAME
#define rep(...) __GET_MACRO3(__VA_ARGS__, FOR, REP)(__VA_ARGS__)
#define rrep(...) __GET_MACRO3(__VA_ARGS__, RFOR, RREP)(__VA_ARGS__)
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v) {
	REP(i, v.size()) { if (i)os << " "; os << v[i]; }return os;
}
template<typename T> ostream& operator<<(ostream& os, const vector<vector<T>>& v) {
	REP(i, v.size()) { if (i)os << endl; os << v[i]; }return os;
}


void solve();

int main() {

	solve();
	return 0;

}

void solve() {

	ll m, n_min, n_max;
	vector<ll> s;



	cin >> m >> n_min >> n_max;

	while (m > 0) {
		ll gap = 0, ans = 0;
		s.resize(m);
		REP(i, m) {

			cin >> s[i];

		}

		FOR(i, n_min-1, n_max ) {

			if (s[i] - s[i + 1] >= gap) {

				ans = i+1;
				gap = s[i] - s[i + 1];

			}

		}

		cout << ans << endl;

	}

}

C++: #include<iostream>
using namespace std;

int main(){
	while(1){
		int m,nmin,nmax;
		cin>>m>>nmin>>nmax;
		if(m==0&&nmin==0&&nmax==0)
			break;
			
		int gap=-1;
		int n=-1;
		int P[200];
		for(int i=0;i<m;i++){
			cin>>P[i];
		}
		for(int i=nmin;i<nmax;i++){
			if(P[i-1]-P[i]>=gap){
				gap=P[i-1]-P[i];
				n=i;
			}
		}
		cout<<n<<endl;
		
	}
	return 0;
}

C++: #include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main(void)
{
  int n_min,n_max;
  int m;
  int p;
  int result=0;
  
  vector <int> point;

  while(1)
    {
      cin >> m >> n_min >> n_max;
      if(m==0 && n_min==0 && n_max==0) break;

      for(int i=0;i<m;i++)
	{
	  cin >> p;
	  point.push_back(p);
	}

      sort(point.begin(),point.end(),greater<int>());

      int gap_max=0;
      int gap_tmp;
  
      for(int i=n_min;i<=n_max;i++)
	{
	  //cout << i << endl;
	  if(i!=0)
	    {
	      gap_tmp = point[i-1]-point[i];
	      if(gap_tmp>=gap_max && i > result)
		{
		  gap_max=gap_tmp;
		  result=i;
		}
	    }
	}

      cout << result << endl;

      gap_max=0;
      result=0;
      point.clear();
    }
  return 0;

}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
  int m,mn,mx;
  int gap;
  int pass;
  while(1){
    gap=0;
    pass=0;
    cin>>m>>mn>>mx;
    if(m==0 && mn==0 & mx==0) break;
    int score[m];
    for(int i=0;i<m;i++){
      cin>>score[i];
    }
    for(int i=mn;i<=mx;i++){
      if(gap<=score[i-1]-score[i]){
	gap=score[i-1]-score[i];
	pass=i;
      }
      /* cout<<pass<<" "<<gap<<endl;*/
    }
    cout<<pass<<endl;
  }
  return 0;
}

C++: #include<cstdio>

int main() {
	int m, nmin, nmax, p[100001], maxg = 0 , n;
	while (1) {
		scanf("%d %d %d", &m, &nmin, &nmax);
		for (int i = 1; i <= m; i++) {
			scanf("%d", &p[i]);
		}
		for (int j = nmin; j <= nmax; j++) {
			if (p[j] - p[j+1] > maxg) {
				maxg = p[j] - p[j+1];
				n = j;
			}
		}
		if (m == 0 && nmin == 0 && nmax == 0) {
			return 0;
		}
		else {
			printf("%d\n", n);
		}
	}
}

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

int main() {
    int n, nmin, nmax;
    while (cin >> n >> nmin >> nmax, n || nmin || nmax) {
        vector<int> p(n);
        for (auto& i : p) cin >> i;

        int ans = 0, c = 0;
        for (int i = nmin; i <= nmax; i++) {
            if (c <= p[i-1] - p[i]) {
                ans = i;
                c = p[i-1] - p[i];
            }
        }

        cout << ans << endl;
    }

    return 0;
}

C++: #include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <string>

using ll = long long;

using namespace std;

int main() {
    while (true) {
        int m, nmi, nma;
        cin >> m >> nmi >> nma;
        if (m == 0) break;
        int prev, ans, dma = 0;
        for (int i=0, ai; i<m; i++) {
            cin >> ai;
            if (i >= nmi && i <= nma) {
                if (dma >= ai - prev) {
                    ans = i;
                    dma = ai - prev;
                }
            }
            prev = ai;
        }
        cout << ans << '\n';
    }
    return 0;
}