Compilare: main.cpp: In function 'int main()': main.cpp:122:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(auto it:ans[i]) ^~~ main.cpp:123:26: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' g<<it-1<<' ';g<<'\n'; ^ main.cpp:82:10: warning: unused variable 'start' [-Wunused-variable] auto start=clock(); ^~~~~