P1765 手机

题目传送门

#include <bits/stdc++.h>

using namespace std;

const int N = 26;
//常数字典
int a[N] = {1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 4, 1, 2, 3, 1, 2, 3, 4};
int cnt;
string s;

int main() {
    //输入
    getline(cin, s);
    //遍历每一个
    for (int i = 0; i < s.size(); i++) {
        if (s[i] >= 'a' && s[i] <= 'z') cnt += a[s[i] - 'a'];//计数思路增加个数
        if (s[i] == ' ') cnt++;
    }
    cout << cnt << endl;
    return 0;
}