Compilare: main.cpp: In function 'bool match(int)': main.cpp:20:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(viz[x] == 1) ^~ main.cpp:22:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' viz[x] = 1; ^~~ main.cpp: In function 'int main()': main.cpp:41:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for ( int i = 1; i <= n; ++i) ^~~ main.cpp:46:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' sort(b.begin(),b.end()); ^~~~