Why doesn't the program succeeds all of the 4 subtasks? C PROGRAM

So i have a program which filters a file containing "emails" in a single line, i link you to the exercise (it is a pdf) https://training.olinfo.it/#/task/ioit_spam/statement so my problem is that it doesn't accomplish all of the 4 tasks but from my tests (i've created a file with 1000 emails) it should correctly and pass all of its cases. i don't know if it's a problem of the corrector on the site (you need to register to test the program) but i link here the scoring (it should score 100 in theory) it might be a problem of the corrector? https://imgur.com/a/QmeY5 and the source file is this https://pastebin.com/iVPXUjxb
Thanks to everyone answering i hope i've made the question clear, the program works in my machine, it can even scan 10000 emails if i'd want to, infact i've tried filtering a 8mb file containing 1000 emails with 1000 words each.
this is the link for the 1000 emails input file https://drive.google.com/file/d/1f9OWkzZ_i9T8s6BcNIq5hXqBogCR2Dcj/view?usp=sharing
Davide CuniAsked:
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sarabandeCommented:
there are 19 views but no comment given what in my opinion is because you show 4 links instead of explaining us your task with their specific problems and providing the code you have.

Sara
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Murugesan NagarajanShell_script Automation /bin/bash /bin/bash.exe /bin/ksh /bin/mksh.exe AIX C C++ CYGWIN_NT HP-UX Linux MINGW32 MINGW64 SunOS Windows_NTCommented:
@DAvide Cuni
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Murugesan NagarajanShell_script Automation /bin/bash /bin/bash.exe /bin/ksh /bin/mksh.exe AIX C C++ CYGWIN_NT HP-UX Linux MINGW32 MINGW64 SunOS Windows_NTCommented:
1. Given comment from Sara
2. Question inactive for 14 days
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