πρόβλημα δυσκοιλιότητας

Question

&Gamma;&epsilon;&iota;&alpha; &sigma;&alpha;&sigmaf;.&tau;&omicron; &pi;&rho;&omicron;&beta;&lambda;&eta;&mu;&alpha; &mu;&omicron;&upsilon; &epsilon;&iota;&nu;&alpha;&iota; &pi;&omega;&sigmaf; &pi;&alpha;&nu;&tau;&alpha; &eta;&mu;&omicron;&upsilon;&nu; &delta;&upsilon;&sigma;&kappa;&omicron;ί&lambda;&iota;&alpha; &alpha;&lambda;&lambda;&alpha; &kappa;&alpha;&theta;&epsilon; &delta;&upsilon;&omicron; &tau;&rho;&epsilon;&iota;&sigmaf; &mu;έ&rho;&epsilon;&sigmaf; &pi;&eta;&gamma;&alpha;&iota;&nu;&alpha; &pi;&alpha;&nu;&tau;&omicron;&tau;&epsilon; &sigma;&tau;&eta;&nu; &tau;&omicron;&upsilon;&alpha;&lambda;έ&tau;&alpha;.&epsilon;&delta;&omega; &kappa;&alpha;&iota; 2 &epsilon;&beta;&delta;&omicron;&mu;ά&delta;&epsilon;&sigmaf; &delta;&epsilon;&nu; &mu;&pi;&omicron;&rho;&omega; &nu;&alpha; &epsilon;&nu;&epsilon;&rho;&gamma;&eta;&theta;&omega;.&pi;&alpha;&iota;&rho;&nu;&omicron;&upsilon;&nu; 4 &mu;&epsilon;&rho;&epsilon;&sigmaf; &chi;&omega;&rho;&iota;&sigmaf; &nu;&alpha; &pi;&eta;&gamma;&alpha;&iota;&nu;&omega; &tau;&omicron;&upsilon;&alpha;&lambda;&epsilon;&tau;&alpha; &kappa;&iota;&alpha; &epsilon;&chi;&omega; &alpha;&nu;&alpha;&gamma;&kappa;&alpha;&sigma;&tau;&epsilon;&iota; &nu;&alpha; &pi;&alpha;&rho;&omega; &tau;&rho;&epsilon;&iota;&sigmaf; &phi;&omicron;&rho;&epsilon;&sigmaf; &chi;&alpha;&pi;&iota; &gamma;&iota;&alpha; &nu;&alpha; &mu;&pi;&omicron;&rho;&epsilon;&sigma;&omega; &nu;&alpha; &epsilon;&nu;&epsilon;&rho;&gamma;&eta;&theta;&omega;.&pi;&alpha;&iota;&zeta;&epsilon;&iota; &rho;&omicron;&lambda;&omicron; &eta; &delta;&iota;&alpha;&tau;&rho;&omicron;&phi;&eta; &sigma;&tau;&omicron; &pi;&rho;&omicron;&beta;ή&mu;&alpha; &alpha;&upsilon;&tau;&omicron; &upsilon;&pi;&alpha;&rho;&chi;&epsilon;&iota; &kappa;&alpha;&tau;&iota; &pi;&omicron;&upsilon; &mu;&pi;&omicron;&rho;&omega; &nu;&alpha; &tau;&rho;&omega;&omega; &pi;&epsilon;&rho;&iota;&sigma;&sigma;ό&tau;&epsilon;&rho;&omicron; &gamma;&iota;&alpha; &nu;&alpha; &alpha;&pi;&omicron;&phi;ύ&gamma;&omega; &sigma;&omicron;&beta;&alpha;&rho;ό&tau;&epsilon;&rho;&alpha; &pi;&rho;&omicron;&beta;ή&mu;&alpha;&tau;&alpha;?&eta; &pi;&rho;&epsilon;&pi;&epsilon;&iota; &nu;&alpha; &alpha;&pi;&epsilon;&upsilon;&theta;&upsilon;&nu;&theta;&omega; &sigma;&epsilon; &kappa;&alpha;&pi;&omicron;&iota;&omicron; &alpha;&rho;&mu;&omicron;&delta;&iota;&omicron; &gamma;&iota;&alpha;&tau;&rho;&omicron; &gamma;&iota;&alpha; &tau;&upsilon;&chi;&omicron;&nu; &epsilon;&xi;&epsilon;&tau;&alpha;&sigma;&epsilon;&iota;&sigmaf;?