I got WA 1, but when I test this code myself, I always get a correct answer. What's wrong?

#include <iostream>
using namespace std;

int main()
{
    char speech[1001];
    cin.getline(speech, 1001);
    int cost = 0;
    for (int i = 0; i < 1001; i++)
    {
        switch (speech[i])
        {
        case 'a': case 'd': case 'g': case 'j': case 'm': case 'p': case 's': case 'v': case 'y': case '.': case ' ':
            cost += 1;
            break;
        case 'b': case 'e': case 'h': case 'k': case 'n': case 'q': case 't': case 'w': case 'z': case ',':
            cost += 2;
            break;
        case 'c': case 'f': case 'i': case 'l': case 'o': case 'r': case 'u': case 'x': case '!':
            cost += 3;
            break;

        }
    }
    cout << cost << endl;

    return 0;
}

Edited by author 29.08.2018 19:40

why are you iterating to 1001 all the time? maybe to string length? though looks fine with case, but nevertheless worth trying