Compilare: main.cpp: In function 'bool border(int, int)': main.cpp:29:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if( i < 1 || j < 1 || i > N || i > M) ^~ main.cpp:32:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(Map[i][j]==-1) ^~