Compilare: user.cpp: In function ‘void Citire()’: user.cpp:19:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= n; i++) ^ user.cpp:20:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j <= n; j++) ^ user.cpp: In function ‘void Rezolvare()’: user.cpp:28:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= n; i++) ^ user.cpp:29:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j <= n; j++) ^ user.cpp:35:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= 2*n-1; i++) ^