no need to copy into another file

Author: lrvideckis

tests/scripts/ptc.sh

@@ -30,10 +30,9 @@ sed --in-place '/^\/\/ NOLINTNEXTLINE(readability-identifier-naming)$/d' ../libr
 chmod +x ../library/contest/hash.sh
 for header in ../library/**/*.hpp; do
 	echo "$header"
-	cp "$header" input
-	lines="$(wc -l <input)"
+	lines="$(wc -l <$header)"
 	for i in $(seq "$lines" -5 1); do
-		hash=$(head -n "$i" input | sed '/^#include/d' | cpp -dD -P -fpreprocessed | ./../library/contest/hash.sh)
+		hash=$(head -n "$i" "$header" | sed '/^#include/d' | cpp -dD -P -fpreprocessed | ./../library/contest/hash.sh)
 		sed -i "${i}s/$/\/\/${hash}/" "$header"
 	done
 done