这样.好像.不.行吧.应该.不能.不能这样写，大佬们.教.教我（0）

#include<bits/stdc++.h>
using namespace std;
string s;
int sum=0;
int main(){
	getline(cin,s);
	int l=s.size();
	for(int i=0;i<l;i++){
		if(i=='a'){
			sum+=1;
		}if(i=='b'){
			sum+=2;
		}if(i=='c'){
			sum+=3;
		}if(i=='d'){
			sum+=1;
		}if(i=='e'){
			sum+=2;
		}if(i=='f'){
			sum+=3;
		}if(i=='g'){
			sum+=1;
		}if(i=='h'){
			sum+=2;
		}if(i=='i'){
			sum+=3;
		}if(i=='j'){
			sum+=1;
		}if(i=='k'){
			sum+=2;
		}if(i=='l'){
			sum+=3;
		}if(i=='m'){
			sum+=1;
		}if(i=='n'){
			sum+=2;
		}if(i=='o'){
			sum+=3;
		}if(i=='p'){
			sum+=1;
		}if(i=='q'){
			sum+=2;
		}if(i=='r'){
			sum+=3;
		}if(i=='s'){
			sum+=4;
		}if(i=='t'){
			sum+=1;
		}if(i=='u'){
			sum+=2;
		}if(i=='v'){
			sum+=3;
		}if(i=='w'){
			sum+=1;
		}if(i=='x'){
			sum+=2;
		}if(i=='y'){
			sum+=3;
		}if(i=='z'){
			sum+=4;
		}
	}
	cout<<sum;
	return 0;
}