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i am trying to solve this exploit problem on pwn_college in aslr is enabled so i cant just use the base address of libc to run shell and its not vulnerable to format string vul so basically i cant leak address out of the stack but the catch i dont need to leak any address the image above added shows that the program provide me with an address leak with its the base address of input function and i can find a way to use that info to reach libc .
i am seeing this the wrong way or there is another way to solve the challenge ,the challenge is under the rop section and the rop4.0 name on pwn_college website

a little explained hinted way to solve the problem but complete walkthrough is also acceptable.