/in/foo.cc:3:19: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
 #define INF (1<<30-1)
                 ~~^~
/in/foo.cc:7:65: note: in expansion of macro 'INF'
 int q[10][N][10],l[10],r[10],m,n,cost,L,sum[10][N],f[N][10],ans=INF;
                                                                 ^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:3:19: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
 #define INF (1<<30-1)
                 ~~^~
/in/foo.cc:13:54: note: in expansion of macro 'INF'
  for(int i=1;i<=n;++i) for(int j=1;j<=m;++j) f[j][i]=INF;
                                                      ^~~