int main() {
    int buf[10];
    char cbuf[10];

    buf[0] = 50;
    buf[1] = 51;
    buf[2] = 52;
    buf[3] = 53;
    buf[4] = 54;

    int b = buf[0]+buf[1];


    cbuf[0] = 30;
    cbuf[1] = 31;
    cbuf[2] = 32;
    cbuf[3] = 33;
    cbuf[4] = 34;

    char c = cbuf[0]+cbuf[1];

    return (int)c; //61
}

void interrupt()
{

}