Compilare: main.cpp: In function 'void rez()': main.cpp:70:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(auto k:nd[j]) ^~~ main.cpp:75:11: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' if(nda==st[j]||nda==dr[j]){ ^~ main.cpp:75:24: warning: 'nda' may be used uninitialized in this function [-Wmaybe-uninitialized] if(nda==st[j]||nda==dr[j]){ ~~~~~~~~~~^~~~~~~~~~~~