/in/foo.cc: In function 'void operate(int)':
/in/foo.cc:25:41: warning: iteration 199 invokes undefined behavior [-Waggressive-loop-optimizations]
   for(int i=1;i<=200;i++)c[i]=d[i]=tem[i];
                                    ~~~~~^
/in/foo.cc:25:16: note: within this loop
   for(int i=1;i<=200;i++)c[i]=d[i]=tem[i];
               ~^~~~~
/in/foo.cc:19:35: warning: iteration 199 invokes undefined behavior [-Waggressive-loop-optimizations]
    for(int i=1;i<=200;i++)c[i]=r[i],d[i]=tem[i];
                                ~~~^
/in/foo.cc:19:17: note: within this loop
    for(int i=1;i<=200;i++)c[i]=r[i],d[i]=tem[i];
                ~^~~~~