Cod sursa(job #541612)
Utilizator | stancu vlad valytgjiu91 | Data | 25 februarie 2011 12:30:43 |
---|---|---|---|
Problema | Light2 | Scor | 10 |
Compilator | fpc | Status | done |
Runda | Romanian Master in Mathematics and Sciences 2011, Ziua 1 | Marime | 0.39 kb |
var
k,x,d,n:int64;
i,p:longint;
v:array[1..100000000] of boolean;
f,g:text;
begin
assign(f,'light2.in');reset(f);
assign(g,'light2.out');rewrite(g);
readln(f,n);
readln(f,p);
for i:=1 to n do
v[i]:=false;
for i:=1 to p do
begin
read(f,d);
x:=d;
while x<=n do
begin
v[x]:=not(v[x]);
x:=x+d;
end;
end;
for i:=1 to n do
if v[i]=true then inc(k);
writeln(g,k);
close(g);
end.