#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <limits.h>
#include <sys/wait.h>
#include <string.h>

enum { INTEGER_BASE = 10 };

void
operate(char path[], char *buf)
{
    //char buf[PATH_MAX] = {0};
    FILE *f = fopen(path, "r");
    fgets(buf, sizeof(buf), f);
    buf[strlen(buf) - 1] = '\0';
    fclose(f);
}

void
execute(char buf[])
{
    pid_t pid = fork();
    if (pid == -1) {
        _exit(1);
    } else if (!pid) {
        execlp(buf, buf, NULL);
        _exit(1);
    }
    return;
}

int main(int argc, char *argv[])
{
    //FILE *f;
    int ans = 0, status;
    int n = strtol(argv[1], NULL, INTEGER_BASE);
    for (int i = 0; i < n; ++i) {
        if (2+i >= argc) {
            break;
        }
        /*
        char buf[PATH_MAX] = {0};
        f = fopen(argv[2+i], "r");
        fgets(buf, sizeof(buf), f);
        buf[strlen(buf) - 1] = '\0';
        fclose(f);
        */
        char buf[PATH_MAX] = {0};
        operate(argv[2+i], buf);

        execute(buf);
    }

    while (wait(&status) > 0)
    {
        ans += (WIFEXITED(status) && !WEXITSTATUS(status));
    }

    for (int i = n + 2; i < argc; ++i) {
        /*
        char buf[PATH_MAX] = {0};
        f = fopen(argv[i], "r");
        fgets(buf, sizeof(buf), f);
        buf[strlen(buf) - 1] = '\0';
        fclose(f);
        */
        char buf[PATH_MAX] = {0};
        operate(argv[i], buf);

        execute(buf);
        wait(&status);
        ans += (WIFEXITED(status) && !WEXITSTATUS(status));
    }
    printf("%d\n", ans);
    fflush(stdout);

    return 0;
}