Compilare: main.cpp: In function 'int main()': main.cpp:34:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=0; i< 1 << N; ++i) ^~~ main.cpp:38:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' C[1][0] = 0; ^ main.cpp:43:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0; k<A[j].size(); ++k) ~^~~~~~~~~~~~ main.cpp:49:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i < A[0].size(); ++i) ~~^~~~~~~~~~~~~