/usr/share/doc/libgivaro-dev/examples/ is in libgivaro-dev 3.7.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libgivaro-dev/examples/FiniteField/
/usr/share/doc/libgivaro-dev/examples/FiniteField/GF128.C
/usr/share/doc/libgivaro-dev/examples/FiniteField/GFirreducible.C
/usr/share/doc/libgivaro-dev/examples/FiniteField/GaloisFields.C.gz
/usr/share/doc/libgivaro-dev/examples/FiniteField/Makefile
/usr/share/doc/libgivaro-dev/examples/FiniteField/Test_Extension.C
/usr/share/doc/libgivaro-dev/examples/FiniteField/all_field.C
/usr/share/doc/libgivaro-dev/examples/FiniteField/domain_to_operatorstyle.C
/usr/share/doc/libgivaro-dev/examples/FiniteField/exponentiation.C
/usr/share/doc/libgivaro-dev/examples/FiniteField/ff_arith.C.gz
/usr/share/doc/libgivaro-dev/examples/FiniteField/gfq_atomic.C.gz
/usr/share/doc/libgivaro-dev/examples/FiniteField/zpz_atomic.C.gz
/usr/share/doc/libgivaro-dev/examples/Integer/
/usr/share/doc/libgivaro-dev/examples/Integer/Makefile
/usr/share/doc/libgivaro-dev/examples/Integer/ModularSquareRoot.C
/usr/share/doc/libgivaro-dev/examples/Integer/ProbLucas.C.gz
/usr/share/doc/libgivaro-dev/examples/Integer/RSA_breaking.C
/usr/share/doc/libgivaro-dev/examples/Integer/RSA_decipher.C
/usr/share/doc/libgivaro-dev/examples/Integer/RSA_encipher.C
/usr/share/doc/libgivaro-dev/examples/Integer/RSA_keys_generator.C
/usr/share/doc/libgivaro-dev/examples/Integer/iexponentiation.C
/usr/share/doc/libgivaro-dev/examples/Integer/ifactor.C
/usr/share/doc/libgivaro-dev/examples/Integer/ifactor_lenstra.C
/usr/share/doc/libgivaro-dev/examples/Integer/igcd.C
/usr/share/doc/libgivaro-dev/examples/Integer/igcdext.C
/usr/share/doc/libgivaro-dev/examples/Integer/ilcm.C
/usr/share/doc/libgivaro-dev/examples/Integer/ispower.C
/usr/share/doc/libgivaro-dev/examples/Integer/isprime.C
/usr/share/doc/libgivaro-dev/examples/Integer/isproot.C
/usr/share/doc/libgivaro-dev/examples/Integer/lambda.C
/usr/share/doc/libgivaro-dev/examples/Integer/lambda_inv.C
/usr/share/doc/libgivaro-dev/examples/Integer/nb_primes.C
/usr/share/doc/libgivaro-dev/examples/Integer/nextprime.C
/usr/share/doc/libgivaro-dev/examples/Integer/order.C
/usr/share/doc/libgivaro-dev/examples/Integer/phi.C
/usr/share/doc/libgivaro-dev/examples/Integer/prevprime.C
/usr/share/doc/libgivaro-dev/examples/Integer/primitiveelement.C
/usr/share/doc/libgivaro-dev/examples/Integer/primitiveroot.C
/usr/share/doc/libgivaro-dev/examples/Integer/probable_primroot.C
/usr/share/doc/libgivaro-dev/examples/Polynomial/
/usr/share/doc/libgivaro-dev/examples/Polynomial/Makefile
/usr/share/doc/libgivaro-dev/examples/Polynomial/PolynomialCRT.C.gz
/usr/share/doc/libgivaro-dev/examples/Polynomial/highorder.C.gz
/usr/share/doc/libgivaro-dev/examples/Polynomial/interpolate.C
/usr/share/doc/libgivaro-dev/examples/Polynomial/isirred.C
/usr/share/doc/libgivaro-dev/examples/Polynomial/isprimitive.C
/usr/share/doc/libgivaro-dev/examples/Polynomial/pol_arith.C
/usr/share/doc/libgivaro-dev/examples/Polynomial/pol_eval.C
/usr/share/doc/libgivaro-dev/examples/Polynomial/pol_factor.C
/usr/share/doc/libgivaro-dev/examples/Polynomial/trunc_arith.C.gz
/usr/share/doc/libgivaro-dev/examples/Rational/
/usr/share/doc/libgivaro-dev/examples/Rational/Makefile
/usr/share/doc/libgivaro-dev/examples/Rational/iratrecon.C
/usr/share/doc/libgivaro-dev/examples/Rational/polydouble.C