这才是认真作弊🎉️

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <ctype.h>
#define MAXN 300000
char s[MAXN];
int main(){
	fgets(s,sizeof(s),stdin);
	int cnt = 0 ;
	int len = strlen(s);
	int flag = 1 , d = 0;
	for(int i = 0;i<len;i++){
		if(isalpha(s[i])){
			if(0-flag!=0)cnt++;
			flag = 0;
			d++;
		}else{flag = 1;}
	}
	printf("%.1lf\n",d,cnt,1.0*d/cnt);
	return 0;
}

made in China

#include <stdio.h>
	#include <iostream>
	#include <string.h>
	using namespace std;
	char a[289819];
	int main()
	{
		double sum = 0 , l = 0;
		while(cin >> a)
		{
			l++;
			sum += strlen(a);
		 } 
		 printf("%.1lf\n",sum/l);
	}

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allright

#include<bits/stdc++.h>
#define int long long
#define INF 0x3f3f3f3f
#define INFSHORT 1e+3
#define INFINT 1e+10
#define INFLONGLONG 1e+19
using namespace std;
char a[1919180];
double sum,l;
signed main(){
	while(cin>>a){
		sum+=strlen(a);
		l++;
	}
	cout<<fixed<<setprecision(1)<<sum/l;
	return 0;
}