提交时间:2026-03-21 15:23:44

运行 ID: 433675

#include<bits/stdc++.h> using namespace std; int main(){ int n,a=0,b=0,c=0,d=0; char f; cin>>n; for(int i=1;i<=n;i++){ cin>>f; if('A'<=f&&f<='Z') a++; else if('a'<=f&&f<='z') b++; else if('0'<=f&&f<='9') c++; else d++; } cout<<a<<" "<<b<<" "<<c<<" "<<d; return 0; }