Compilare: user.cpp: In function ‘int main()’: user.cpp:257:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(n - i == b.size()) B[i] = 1; ^ user.cpp:273:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(n - i == a.size()) A[i] = 1; ^ user.cpp:364:25: warning: statement has no effect [-Wunused-value] print(i); ^ user.cpp:365:28: warning: statement has no effect [-Wunused-value] print(A[i]); ^ user.cpp:366:28: warning: statement has no effect [-Wunused-value] print(B[i]); ^ user.cpp:367:32: warning: statement has no effect [-Wunused-value] print(A[i + 1]); ^ user.cpp:368:32: warning: statement has no effect [-Wunused-value] print(B[i + 1]); ^ user.cpp:369:32: warning: statement has no effect [-Wunused-value] print(C[i + 1]); ^ user.cpp:370:38: warning: statement has no effect [-Wunused-value] print(fixed_A[i + 1]); ^ user.cpp:371:38: warning: statement has no effect [-Wunused-value] print(fixed_B[i + 1]); ^ user.cpp:372:38: warning: statement has no effect [-Wunused-value] print(fixed_C[i + 1]); ^ user.cpp:373:34: warning: statement has no effect [-Wunused-value] print(fixed_A[i]); ^ user.cpp:374:34: warning: statement has no effect [-Wunused-value] print(fixed_B[i]); ^ user.cpp:375:34: warning: statement has no effect [-Wunused-value] print(fixed_C[i]); ^ user.cpp:376:34: warning: statement has no effect [-Wunused-value] print(has[i + 1]); ^ user.cpp:377:32: warning: statement has no effect [-Wunused-value] print(needs[i]); ^ user.cpp:378:36: warning: statement has no effect [-Wunused-value]