Compilare: user.cpp: In function ‘int main()’: user.cpp:4:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define for1(i, n) for(int i = 1; i <= n; i++) ^ user.cpp:109:5: note: in expansion of macro ‘for1’ for1(i, s.size()) ^ user.cpp:4:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define for1(i, n) for(int i = 1; i <= n; i++) ^ user.cpp:120:5: note: in expansion of macro ‘for1’ for1(i, t.size()) ^ user.cpp:134:9: warning: unused variable ‘SOL’ [-Wunused-variable] int SOL = 0; ^