XVII Open Cup named after E.V. Pankratiev. Grand Prix of SPb D cutting potatoes

一堆數，最多能分n次，求分後最大值除以最小值的 最小值  

#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <map>
#include <iostream>
using namespace std ;

map<int , int> ma ;
int save[200] ;
struct node{
    int x , y ;
    double value ;
    bool operator < ( const node & k )const {
        return value < k.value ;
    }
    bool operator == (const node & k ) const {
        if(x == k.x && y == k.y && value == k.value ) return true ;
        return false ;
    }
};
node ran[100000] ;
int dif[500] ;
int vis[500] ;
/*
4 3
5 5 3 2
*/
int main(){
    int n , s ;
    while(~ scanf("%d %d" , &n , &s)){
        int pos = 0 ;
        int dif_pos = 0 ;
        for(int i = 0 ; i < n ; i ++ ){
            scanf("%d" , &save[i]) ;
            dif[dif_pos++] = save[i] ;
            for(int j = 1 ; j <= s ; j ++){
                ran[pos].x = save[i] ;
                ran[pos].y = j ;
                ran[pos ++ ].value = save[i] * 1.0 / j ;
            }
        }
        sort(ran , ran + pos) ;
        pos = unique(ran , ran + pos) - ran ;
        sort(dif , dif + dif_pos) ;
        dif_pos = unique(dif , dif + dif_pos) - dif ;

        //for(int i = 0 ; i < dif_pos ; i ++ ) cout << dif[i] << endl ;
        //for(int i = 0 ; i < pos ; i ++ ) cout << ran[i].value << " " << ran[i].x << endl ;cout << endl ;
        double ans = 9999 ; int st = 0  , len = 0 ;
        for(int i = 0 ; i < pos ; i ++ ){
            memset(vis , 0 , sizeof(vis)) ;
            int num = 0 ;
            for(int j = i ; j < pos ; j ++ ){
                if(!vis[ ran[j].x ]){
                    num ++ ;
                    vis[ ran[j].x ] = 1 ;
                }
                if(num == dif_pos){
                    //for(int i = 1 ; i <= 5 ; i ++ ) cout << vis[i] << " " ; cout << endl ;
                    //cout << i << " " << ans << " " << ran[j].value / ran[i].value << endl ;
                    if( ran[j].value / ran[i].value < ans ){
                            //cout << i << " " << j << " " << num << endl ;
                        ans = ran[j].value / ran[i].value ;
                        st = i ;
                        len = j - i + 1;
                    }
                    break ;
                }
            }
        }
        ma.clear() ;
        for(int i = st ; i < st + len ; i ++ ){
            if(!ma[ ran[i].x ])
                ma[ ran[i].x ] = ran[i].y ;
            //cout << ran[i].y << " " << ran[i].x << endl ;
        }
        for(int i = 0 ; i < n-1 ; i ++ ){
            printf("%d " ,  ma[save[i]]) ;
        }
        printf("%d\n" , ma[save[n-1]]) ;
    }
    return 0 ;
}