program wordsa;
const
  t1:array[0..12]of integer=
    (0,31,59,90,120,151,181,212,243,273,304,334,365);
  t2:array[0..12]of integer=
    (0,31,60,91,121,152,182,213,244,274,305,335,366);
var
  a:array[0..5001] of longint;
  st:array[1..2] of string;
  yard,month,day,hour,minute,tday,tminute:array[1..2] of longint;
  n,i,j,ans:longint;
  time,he:int64;
  code:integer;
  bool:boolean;

procedure sort(l,r:longint);
var
  i,j,x,temp:longint;
begin
  i:=l;
  j:=r;
  x:=a[(l+r) div 2];
  repeat
    while a[i]<x do
      inc(i);
    while a[j]>x do
      dec(j);
    if i<=j then
    begin
      temp:=a[i];
      a[i]:=a[j];
      a[j]:=temp;
      inc(i);
      dec(j)
    end
  until i>j;
  if i<r then sort(i,r);
  if l<j then sort(l,j)
end;

begin
  assign(input,'wordsa.in');
  reset(input);
  assign(output,'wordsa.out');
  rewrite(output);
  readln(n);
  for i:=1 to n do
    readln(a[i]);
  sort(1,n);
  for i:=1 to 2 do
  begin
    readln(st[i]);
    st[i]:=st[i]+'#';
    for j:=1 to 5 do
      if st[i,j+1]='-' then
      begin
        val(copy(st[i],1,j),yard[i],code);
        delete(st[i],1,j+1);
        break
      end;
    for j:=1 to 5 do
      if st[i,j+1]='-' then
      begin
        val(copy(st[i],1,j),month[i],code);
        delete(st[i],1,j+1);
        break
      end;
    for j:=1 to 5 do
      if st[i,j+1]='-' then
      begin
        val(copy(st[i],1,j),day[i],code);
        delete(st[i],1,j+1);
        break
      end;
    for j:=1 to 5 do
      if st[i,j+1]=':' then
      begin
        val(copy(st[i],1,j),hour[i],code);
        delete(st[i],1,j+1);
        break
      end;
    for j:=1 to 5 do
      if st[i,j+1]='#' then
      begin
        val(copy(st[i],1,j),minute[i],code);
        break
      end;
  end;
  for i:=1 to 2 do
  begin
    if ((yard[i] mod 100=0) and (yard[i] mod 400=0)) or ((yard[i] mod 100<>0) and (yard[i] mod 4=0))
      then tday[i]:=t2[month[i]]+day[i]
      else tday[i]:=t1[month[i]]+day[i];
    tminute[i]:=hour[i]*60+minute[i]
  end;
  time:=0;
  if (yard[1]=yard[2]) and (month[1]=month[2]) and (day[1]=day[2]) then
  begin
    time:=tminute[2]-tminute[1]
  end
  else
  begin
    if yard[1]=yard[2] then
    begin
      time:=(tday[2]-tday[1]-1)*60*24;
      time:=time+60*24-tminute[1];
      time:=time+tminute[2]
    end
    else
    begin
      for i:=yard[1]+1 to yard[2]-1 do
        if ((i mod 100=0) and (i mod 400=0)) or ((i mod 100<>0) and (i mod 4=0))
          then time:=time+527040
          else time:=time+525600;
      if ((yard[1] mod 100=0) and (yard[1] mod 400=0)) or ((yard[1] mod 100<>0) and (yard[1] mod 4=0))
        then time:=time+527040-(tday[1]-1)*60*24-tminute[1]
        else time:=time+525600-(tday[1]-1)*60*24-tminute[1];
      time:=time+(tday[2]-1)*24*60+tminute[2]
    end
  end;
  he:=0;
  bool:=true;
  for i:=1 to n do
    if he+a[i]>time then
    begin
      ans:=i-1;
      bool:=false;
      break
    end
    else
    begin
      he:=he+a[i]
    end;
  if bool
    then writeln(n)
    else writeln(ans);
  close(input);
  close(output)
end.