Var s: string; a, b: integer; begin readln(s); if s[1] = 'x' then begin a := StrToInt(s[3]); b := StrToInt(s[5]); if s[2] = '-' then a := -a; writeln(b - a); end else if s[3] = 'x' then begin a := StrToInt(s[1]); b := StrToInt(s[5]); if s[2] = '-' then begin a := -a; b := -b; end; writeln(b - a); end else if s[5] = 'x' then begin a := StrToInt(s[1]); b := StrToInt(s[3]); if s[2] = '-' then b := -b; writeln(a + b); end end.
учтите что никакой защиты от дурака или неверного ввода
type
base = record
id: integer;
ball: integer;
end;
var
t: text;
a: array of array of integer;
n: integer;
st, tmp: string;
err: integer := 1;
database: base;
begin
readln(n);
setlength(a, n);
for i: integer := low(a) to high(a) do
setlength(a[i], 2);
for i: integer := low(a) to high(a) do
begin
readln(st);
tmp := st;
delete(tmp, pos(' ', tmp, err), tmp.Length - pos(' ', tmp, err) + 1);
database.id := strtoint(tmp);
tmp := st;
delete(tmp, 1, pos(' ', tmp, err));
database.ball := strtoint(tmp);
a[i, 0] := database.id;
a[i, 1] := database.ball;
end;
var j: integer := 0;
assign(t, 'output.txt');
rewrite(t);
while (j <= high(a)) do
begin
if (j + 1 < high(a)) and (a[j, 1] = a[j + 1, 1]) then
if (a[j, 0] < a[j + 1, 0]) then begin
write(t, inttostr(a[j, 0])); write(t, ' '); write(t, inttostr(a[j, 1])); writeln(t,'');
write(t, inttostr(a[j + 1, 0])); write(t, ' '); write(t, inttostr(a[j + 1, 1])); writeln(t,'');
end else begin
write(t, inttostr(a[j + 1, 0])); write(t, ' '); write(t, inttostr(a[j + 1, 1])); writeln(t,'');
write(t, inttostr(a[j, 0])); write(t, ' '); write(t, inttostr(a[j, 1])); writeln(t,'');
end;
if (j+1=n) then
write(t, inttostr(a[j, 0])); write(t, ' '); write(t, inttostr(a[j, 1])); writeln(t,'');
inc(j, 2);
end;
close(t);
end.
s: string;
a, b: integer;
begin
readln(s);
if s[1] = 'x' then begin
a := StrToInt(s[3]);
b := StrToInt(s[5]);
if s[2] = '-' then a := -a;
writeln(b - a);
end
else if s[3] = 'x' then begin
a := StrToInt(s[1]);
b := StrToInt(s[5]);
if s[2] = '-' then begin
a := -a;
b := -b;
end;
writeln(b - a);
end
else if s[5] = 'x' then begin
a := StrToInt(s[1]);
b := StrToInt(s[3]);
if s[2] = '-' then
b := -b;
writeln(a + b);
end
end.
учтите что никакой защиты от дурака или неверного ввода