使用正则匹配
let str = readline()
let letter = 0, blank =0, number = 0, other = 0;
for(let i = 0; i< str.length; i ++){
if(/^[a-zA-Z]$/.test(str[i])){
letter++
continue
}
if(/^[ ]$/.test(str[i])){
blank++
continue
}
if(/^[0-9]$/.test(str[i])){
number++
continue
}
other++
}
print(letter)
print(blank)
print(number)
print(other)