uses crt;
var n,i,a,s:integer;
begin
clrscr;
write('n=');
readln(n);
s:=0;
writeln('Введите ',n,' чисел');
for i:=1 to n do
begin
write('a',i,'=');
readln(a);
if i-a=1 then s:=s+a;
end;
write('Сумма=',s);
readln
end.
uses crt;
var n,i,a,s:integer;
begin
clrscr;
write('n=');
readln(n);
s:=0;
writeln('Введите ',n,' чисел');
for i:=1 to n do
begin
write('a',i,'=');
readln(a);
if i-a=1 then s:=s+a;
end;
write('Сумма=',s);
readln
end.