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![](https://rs.olm.vn/images/avt/0.png?1311)
const fi='vao.inp';
fo='ra.out';
var f1,f2:text;
st:string;
i,d:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,st);
d:=length(st);
for i:=1 to d do
if st[i]='a' then delete(st,i,1);
writeln(f2,st);
close(f1);
close(f2);
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var st:string;
begin
clrscr;
readln(st);
delete(st,3,5);
writeln(st);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
cau 1:
uses crt;
var a:array[1..100] of integer;
n,i,min: integer;
begin
readln(n);
for i:=1 to n do
readln(a[i]);
min:=a[1];
for i:=2 to n do
if min>a[i] then min=a[i];
writeln(a[i]);
readln;
end.
cau 2:
uses crt;
g:text;
s:string;
const fo='CHUSO.TXT';
begin
assign(g,fo);
rewrite(g);
readln(s);
for i:=1 to length(s) do
if not((s[i] in ['a'..'z'])and(s[i] in ['A'..'Z])) then delete(s,i,1);
writeln(g,s);
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
const fi='vb.txt';
var f1:text;
st:string;
i,d:integer;
begin
clrscr;
assign(f1,fi); rewrite(f1);
readln(st);
d:=length(st);
for i:=1 to d do
if st[i] in ['A'..'Z'] then write(f1,st[i]:4);
close(f1);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
const fi='dl.inp';
fo='dl.out';
var f1,f2:text;
st:string;
i,d:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,st);
d:=length(st);
for i:=2 to d-1 do
write(f2,st[i]);
close(f1);
close(f2);
end.
uses crt;
const fo='de22.out';
var f1:text;
st:string;
begin
clrscr;
readln(st);
assign(f1,fo); rewrite(f1);
writeln(f1,st);
close(f1);
end.