Compilare: main.cpp: In function 'int main()': main.cpp:29:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(fr[i] == -1) ^~ main.cpp:31:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' long long nr = 0; ^~~~