cf1066a Vova and Train (analog)

Flood problem ...

The topic asks you to ask to see the number of lanterns, we can divide into 3 parts

• Total number of Lanterns —————— 1

• In lll

• Number of lanterns on the left of R (including RRR) —————— 3

We know that by the top 2-3 is the number of lanterns blocked by another train

So 1-2+3 is the answer;

Code:

#include <iostream>#include<cstdio>#include<cstring>#include<algorithm>#defineRii Register int i#defineRij Register Int Jusing namespacestd;intt,len,l,r,v;voidsolve () {scanf ("%d%d%d%d",&len,&v,&l,&R); intsl1=len/v; intSl2= (l1)/v; intsl3=r/v; SL1-=SL3; SL1+=SL2; printf ("%d\n", SL1);}intMain () {intT; scanf ("%d",&t);  for(rii=1; i<=t;i++) {solve (); } }

cf1066a Vova and Train (analog)