I solved this problem on Pascal and was AC. But i wrote same program on C and C++. It gives same answers on same tests on my machine but gives WA on test 1 when i submit.
These my programs:

On pascal::

var
a:array[1..10000] of integer;
k,n,m,i:integer;
s:longint;

procedure cle;
var i:integer;
begin
for i:=1 to n do a[i]:=0;
end;

begin
read(n,m);
cle;
s:=0;
for i:=1 to m do begin
readln(k);
if k<>0 then
inc(a[k]);
end;


for i:=1 to n do begin
if a[i]<>0 then
writeln(a[i]/m*100:2:2,'%')
else writeln('0.00%');
end;

end.




On C:

#include <stdio.h>

void main(){
int k,n,m,i;
int a[10000];

scanf("%d %d\n",&n,&m);

for (i=1;i<=n;i++) a[i]=0;

for (i=1;i<=m;++i){
scanf("%d",&k);
if (k!=0) a[k]++;
}


for (i=1;i<=n;++i){
if (a[i]!=0) printf("%2.2f%\n",(float)a[i]/m*100);
else printf("0.00\n");
}

}