Accepted
/in/foo.cc: In function 'void spfa(int, int)':
/in/foo.cc:10:34: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
f[S][now]=0;vis[q[h=t=0]=S]=s=1;
~^~
/in/foo.cc: In function 'void spfa(int, int)':
/in/foo.cc:10:34: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
f[S][now]=0;vis[q[h=t=0]=S]=s=1;
~^~
