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Try using else-if instead of the ifs. Also, instead of putting 1 inside the while bracket, try putting &free or true. If this helped, please click on the tick mark.

Instead of long, use unsigned long long int to hold very long numbers. Check out man.cs50.io for a function to take a long long int. If this helped, please click the tick mark.

The loops are all correct. Put long_str[key] = long_run inside the for loop like this: for key in long_str: i = 0 run = 0 long_run = 0 while i < len(sequence_dn …

You can also count the number of rows using SELECT COUNT(title) instead of SELECT title in the query.

It happens some times. It is still in the substitution directory. If you are not sure then type cd in the terminal and then type cd pset2/substitution in the terminal. If this helps please check the t …

The problem is that you are decreasing the width. Instead of using width - 1, use width - j - 1. Eliminate the width--; line at the end of the inner loop. Also, instead of using j<width use j<(width/2 …

Quote and stocks are one and the same. So you should keep only one of them. Your first error takes place at price = quote.get("price"). This line is correct but in the wrong place. Once you have check …

The problem is simple. Your placeholder for hash in the sql insert statement is hash but then you have used hash_p instead of hash when assigning the value. Hope this helps. If it does then please che …

It is not able to check if a jpeg has already been opened or not. For this, set as if-else where you check if counter is 0 or greater than 0. if it is greater than zero, fwrite, else break. …

You have made an if statement, an else if statement, but not an else statement to finish the loop. Also try running your program part by part to identify any other problems. If this helped, please cl …

Close the file at the end of the function. This will prevent memory leakage. If this helps, please check the tickmark.