foo.cc: In function 'int main()':
foo.cc:18:27: warning: narrowing conversion of '((double)t.node::now * 1.2e+0)' from 'double' to 'int' inside { } [-Wnarrowing]
         int nxt[3] ={t.now*1.2, t.now+1, t.now-1};
                      ~~~~~^~~~

[Hydro](https://hydro.ac)提供评测服务