import std.algorithm, std.container, std.conv, std.math, std.range, std.typecons, std.stdio, std.string;
import std.datetime, core.time;

auto rdsp(){return readln.splitter;}
void pick(R,T)(ref R r,ref T t){t=r.front.to!T;r.popFront;}
void readV(T...)(ref T t){auto r=rdsp;foreach(ref v;t)pick(r,v);}

void main()
{
  string s; readV(s);

  auto d = Date(s[0..4].to!int, s[5..7].to!int, s[8..10].to!int);
  d += 2.days;

  writefln("%04d/%02d/%02d", d.year, d.month, d.day);
}