#include <stdio.h>
    #include <sys/stat.h>
#include <dirent.h>
#include <string.h>
#include <stdlib.h>


long long int counter(const char* dirPath, char* lastDir){
    printf("%sn", dirPath);
    long long int tmp;
    long long int res = 0;
    char* dirCopy;
    DIR *dir = opendir(dirPath);
    if (strcmp(lastDir, "add") == 0){
        res = 0;
        struct  dirent *de = readdir(dir);
        while (de){
            if (strcmp(de->d_name, "add") == 0){
                dirCopy = (char*)malloc((strlen(dirPath) + 5) * sizeof(char));
                strcpy(dirCopy, dirPath);
                strcat(dirCopy, "/");
                strcat(dirCopy, "add");
                res += counter(dirCopy, "add");
            }
            else if(strcmp(de->d_name, "mul") == 0){
                dirCopy = (char*)malloc((strlen(dirPath) + 5) * sizeof(char));
                strcpy(dirCopy, dirPath);
                strcat(dirCopy, "/");
                strcat(dirCopy, "mul");
                res += counter(dirCopy, "mul");
            }
            else if(strstr(de->d_name, ".txt") != NULL){
                dirCopy = (char*)malloc((strlen(dirPath) + strlen(de->d_name) + 2) * sizeof(char));
                strcpy(dirCopy, dirPath);
                strcat(dirCopy, "/");
                strcat(dirCopy, de->d_name);
                FILE* file = fopen(dirCopy, "r");
                while(fscanf(file, "%lld", &tmp) != EOF){
                    printf("%lldn", tmp);
                    res += tmp;
                }
            }
                    de = readdir(dir);
        }
    }
    else if (strcmp(lastDir, "mul") == 0){
        res = 1;
        struct  dirent *de = readdir(dir);
        while (de){
            if (strcmp(de->d_name, "add") == 0){
                dirCopy = (char*)malloc((strlen(dirPath) + 5) * sizeof(char));
                strcpy(dirCopy, dirPath);
                strcat(dirCopy, "/");
                strcat(dirCopy, "add");
                res *= counter(dirCopy, "add");
            }
            else if(strcmp(de->d_name, "mul") == 0){
                strcpy(dirCopy, dirPath);
                strcat(dirCopy, "/");
                strcat(dirCopy, "mul");
                res *= counter(dirCopy, "mul");
            }
            else if(strstr(de->d_name, ".txt") != NULL){
                dirCopy = (char*)malloc((strlen(dirPath) + strlen(de->d_name) + 2) * sizeof(char));
                strcpy(dirCopy, dirPath);
                strcat(dirCopy, "/");
                strcat(dirCopy, de->d_name);
                FILE* file = fopen(dirCopy, "r");
                while(fscanf(file, "%lld", &tmp) != EOF){
                    printf("%lldn", tmp);
                    res *= tmp;
                }
            }
            de = readdir(dir);
        }
    }
    else if (strcmp(lastDir, "tmp") == 0){
        if(dir) {
            res = 0;
                struct  dirent *de = readdir(dir);
                while (de) {
                    if (strcmp(de->d_name, "add") == 0){
                    dirCopy = (char*)malloc((strlen(dirPath) + 5) * sizeof(char));
                    strcpy(dirCopy, dirPath);
                    strcat(dirCopy, "/");
                    strcat(dirCopy, "add");
                    res += counter(dirCopy, "add");
                }
                else if(strcmp(de->d_name, "mul") == 0){
                    dirCopy = (char*)malloc((strlen(dirPath) + 5) * sizeof(char));
                    strcpy(dirCopy, dirPath);
                    strcat(dirCopy, "/");
                    strcat(dirCopy, "mul");
                    res += counter(dirCopy, "mul");
                }
                        de = readdir(dir);
                }
            }
    }
    return res;
}




int main(){
    char* path = (char*)malloc(4 * sizeof(char));
    long long int c;
    FILE* file_ptr;
    strcpy(path,"tmp");
    c = counter(path, "tmp");
    file_ptr = fopen("result.txt", "w");
    fprintf(file_ptr, "%lld", c);
}