char* kth_word_in_mth_sentence_of_nth_paragraph(char**** document, int k, int m, int n) {
    return document[n-1][m-1][k-1];
}

char** kth_sentence_in_mth_paragraph(char**** document, int k, int m) { 
    return document[m-1][k-1];
}

char*** kth_paragraph(char**** document, int k) {
    return document[k-1];
}

char**** get_document(char* text) {
    char**** document = (char****)malloc(sizeof(char***)*5);
    for (int i = 0; i < 5; i++){
        document[i] = (char***)malloc(sizeof(char**)*10);
        for (int j = 0; j < 10; j++){
            document[i][j] = (char**)malloc(sizeof(char*)*50);
            for(int k = 0; k < 50; k++){
                document[i][j][k] = (char*)malloc(sizeof(char)*100);
            }
        }
    } 
    char ch = ' ';
    int par = 0, sen = 0, wor = 0, let = 0;
    for (int i = 0; i < strlen(text); i++){
        ch = text[i];
        if (ch == ' '){
            wor++;
            let = 0;
        } else if (ch == '.'){
            sen++;
            wor = 0;
            let = 0;
        } else if (ch == '\n'){
            par++;
            sen = 0;
            wor = 0;
            let = 0;
        } else{
            document[par][sen][wor][let] = ch;
            let++;
        }
    }
    return document;
}