#include <stdio.h>
      int arr[120];
     int main(){
     	int n,m,i,d,sum,count=0;
     	scanf("%d\n%d",&m,&n);
     	for(i=1;i<=n;i++){
     		scanf("%d",&arr[i]);
     		if(m>=arr[i]&&sum>0){
     			sum=m-arr[i];
			 }else
			 count++;
		 }
     	printf("%d",count);
     	return 0;
	 }