Compilare: user.cpp: In function ‘int main()’: user.cpp:7:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define For(i, x, y) for(int i = x; i <= y; ++i) user.cpp:23:9: For(i, 1, t){ ~~~~~~~ user.cpp:23:5: note: in expansion of macro ‘For’ For(i, 1, t){ ^~~ user.cpp:7:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define For(i, x, y) for(int i = x; i <= y; ++i) user.cpp:28:13: For(j, 1, n){ ~~~~~~~ user.cpp:28:9: note: in expansion of macro ‘For’ For(j, 1, n){ ^~~ user.cpp:7:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define For(i, x, y) for(int i = x; i <= y; ++i) user.cpp:33:13: For(j, 1, n - 1){ ~~~~~~~~~~~ user.cpp:33:9: note: in expansion of macro ‘For’ For(j, 1, n - 1){ ^~~ user.cpp:46:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if((1 << (N - 1)) == idx){ ~~~~~~~~~~~~~~~^~~~~~ user.cpp:53:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(idx > (1 << n)){ ~~~~^~~~~~~~~~ user.cpp:7:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define For(i, x, y) for(int i = x; i <= y; ++i) user.cpp:63:13: For(j, 1, nr) ~~~~~~~ user.cpp:63:9: note: in expansion of macro ‘For’ For(j, 1, nr) ^~~