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<iostream>
using namespace std;

int main(){
 while(true){
  int m, n_min, n_max;
  cin >> m >> n_min >> n_max;
  if(m==0 && n_min==0 && n_max==0) break;

  int P[m];
  for(int i=0; i<m; i++){
   cin >> P[i];
  }

  int gap = -1;
  int n = -1;
 
  for(int i=n_min; i<=n_max; i++){
   int g = P[i-1]-P[i];
   if(gap<=g){
    gap = g;
    n = i;
   }
  }
  
  cout << n << endl;
 }

 return 0;
}

C++: #include<cstdio>

int main() {
	int m, nmin, nmax, p[201], maxg = 0 , n;
	while (1) {
		scanf("%d %d %d", &m, &nmin, &nmax);
		for (int i = 0; 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;
			}
			printf("%d\n", n);
		}
		if (m == nmin == nmax == 0)return 0;
	}
}

C++: #include <bits/stdc++.h>
 
using namespace std;
 
#define INF (1<<29)
 
int main()
{
    int m, nmin, nmax;
    while (cin >> m >> nmin >> nmax, m) {
        vector<int> P(m);
        for (int i = 0; i < m; i++) {
            cin >> P[i];
        } 
        int gap = P[nmin-1] - P[nmin], res = nmin;
        for (int i = nmin; i < nmax; i++) {
            if (gap < P[i] - P[i+1]) {
                gap = P[i] - P[i+1];
                res = i + 1;
            } else if (gap == P[i] - P[i+1]) {
                res = i + 1;
            }
        }
        cout << res << endl;
    }
    return 0;
}

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

int main(){
	while (true) {
		int m,nmin,nmax;
		cin>>m>>nmin>>nmax;

		if (m==0&&nmin==0&&nmax==0) break;

		int P[200];
		for (int i = 0; i < m; i++) {
			cin>>P[i];
		}

		int gap=-1;
		int n=-1;

		for (int i = nmin; i < nmax; i++) {
			int g=P[i-1]-P[i];

			if(gap<=g){
				gap=g;
				n=i;
			}
		}
		cout<<n<<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++) {
        long gap = ps[i - 1] - ps[i];
        if (gap >= maxgap) {
          maxgap = gap;
          n = i;
        }
      }
      assert(maxgap != 0);
      cout << n << endl;
    }
  }
}

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

using namespace std;

typedef long long ll;
typedef pair<ll, ll> P;

#define each(i,a) for (auto&& i : a)
#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__)
#define pb push_back
#define all(a) (a).begin(),(a).end()
#define chmin(x,v) x = min(x, v)
#define chmax(x,v) x = max(x, v)

const ll linf = 1e18;
const int inf = 1e9;
const double eps = 1e-12;
const double pi = acos(-1);

template<typename T>
istream& operator>>(istream& is, vector<T>& vec) {
    each(x,vec) is >> x;
    return is;
}
template<typename T>
ostream& operator<<(ostream& os, const vector<T>& vec) {
    rep(i,vec.size()) {
        if (i) os << " ";
        os << vec[i];
    }
    return os;
}
template<typename T>
ostream& operator<<(ostream& os, const vector< vector<T> >& vec) {
    rep(i,vec.size()) {
        if (i) os << endl;
        os << vec[i];
    }
    return os;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    ll n, a, b;
    while (cin >> n >> a >> b, n || a || b) {
        vector<ll> s(n); cin >> s;
        P ans(-linf, -linf);
        rep(i, n-1) {
            if (a <= i+1 && i+1 <= b) {
                chmax(ans, P(s[i] - s[i+1], i+1));
            }
        }
        cout << ans.second << endl;
    }
}

C++: #include <stdio.h>

int main(){
	int m,na,nb,p[200];
	while(1){
		scanf("%d %d %d",&m,&na,&nb);
		if(!m) break;
		for(int i=0;i<m;i++)
			scanf("%d",&p[i]);
		int max=0;
		int ans;
		for(int i=na;i<=nb;i++){
			if(max<p[i-1]-p[i]){
				max=p[i-1]-p[i];
				ans=i;
			}
		}
		printf("%d\n",ans);
	}
	return 0;
}

C++: #include<vector>
#include<iostream>
#include<algorithm>
using namespace std;
vector<int>score(201);
int main() {
	int m, nmin, nmax;
	
	while (cin >> m >> nmin >> nmax, !(m == 0 && nmin == 0 && nmax == 0)) {
		
		for (int i = 0; i < m; i++) {
			cin >> score[i];
		}
		int ans=0;
		int s = 0;
		for (int i = nmin-1; i <= nmax-1; i++) {
			
			if (s <= score[i ] - score[i+1]) {
				ans = max(ans,i+1);
				s = max(s, score[i ] - score[i+1]);
				
			}
		}
		cout << ans << endl;
	}
	return 0;
}

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

int main(){
	int m, min, max, a[300], ans, t = 0;
		
	while (1){
		cin>>m>>min>>max;
		if(m == 0 && min == 0 && max == 0){
			break;
		}
		for(int i = 1; i <= m; i++){
			cin>>a[i];
		}
		for(int i = min; i <= max; i++){
			if(a[m - i + 1] - a[m - i] >= t){
				t = a[m - i] - a[m - i - 1];
				ans = i;
			}
		}
		cout<<ans<<endl;
		
	}
	return 0;
}

C++: #define _USE_MATH_DEFINES
#define INF 0x3f3f3f3f

#include <iostream>
#include <cstdio>
#include <sstream>
#include <cmath>
#include <cstdlib>
#include <algorithm>
#include <queue>
#include <stack>
#include <limits>
#include <map>
#include <string>
#include <cstring>
#include <set>
#include <deque>
#include <bitset>
#include <list>
#include <cctype>
#include <utility>
  
using namespace std;
  
typedef long long ll;
typedef pair <int,int> P;
typedef pair <int,P> PP;
  
static const double EPS = 1e-8;
  
int tx[] = {0,1,0,-1};
int ty[] = {-1,0,1,0};

int main(){
  int num_student;
  int num_min_pass;
  int num_max_pass;
  while(~scanf("%d %d %d", &num_student, &num_min_pass, &num_max_pass)) {
    if (num_student == 0) break;

    int score[10000];
    for (int student_i = 0; student_i < num_student; student_i++) {
      scanf("%d", &score[student_i]);
    }
    sort(score,score + num_student, greater<int>());
    int diff = -1;
    int res = 0;
    for (int pass_i = num_min_pass - 1; pass_i < num_max_pass; pass_i++) {
      int min_pass_score = score[pass_i];
      int max_fail_score = score[pass_i + 1];
      if (diff <= min_pass_score - max_fail_score) {
	diff = min_pass_score - max_fail_score;
	res = pass_i + 1;
      }
    }
    printf("%d\n",res);
  }
}

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

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