Autoestrada-[OBI]

#include <stdio.h>

int main() {

    int i, valor, soma=0, count=0;

    scanf("%d", &valor);

    char carac[valor];

        for(i=0; i<=valor; i++) {

        scanf("%c", &carac[i]);

        if(carac[i] == 'P') count = count + 2;

        else if(carac[i] == 'C') count = count+2;

        else if(carac[i] == 'A') count++;

        else count = count + 0;   }

    printf("%d", count);

    return 0;
}