?#include <stdio.h>? int main(int argc, char *argv[])? {??? int n,m,aMax,bMin,i;??? scanf("%d%d",&n,&m);??? int a[20],b[20];??? aMax=0;??? bMin=0;??? for(i=0;i<n;i++)??? {??????? scanf("%d",a[i]);??????? if(a[i]>a[aMax])??????????? aMax=i;??? }??? for(i=0;i<m;i++)??? {??????? scanf("%d",b[i]);??????? if(b[i]<b[bMin])??????????? bMin=i;??? }??? printf("%.2f",aMax-bMin*1.0);??? return 0;? }