Compilare: main.cpp: In function 'void read()': main.cpp:13:12: warning: unused variable 'i' [-Wunused-variable] {int a,b,c,i; ^ main.cpp: In function 'void init()': main.cpp:22:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;i++) ^~~ main.cpp:24:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' dist[start]=0; ^~~~