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uses crt;
const fi='input.txt';
var f1:text;
a,b,c:array[1..100]of real;
i,n:integer;
begin
clrscr;
assign(f1,fi); reset(f1);
n:=0;
while not eof(f1) do
begin
n:=n+1;
readln(f1,a[n],b[n],c[n]);
end;
for i:=1 to n do
writeln('Tong cua dong ',i,' la: ',a[i]+b[i]+c[i]:4:2);
for i:=1 to n do
writeln('Trung binh cong cua dong ',i,' la: ',(a[i]+b[i]+c[i])/3:4:2);
close(f1);
readln;
end.
uses crt;
const fi='input.txt';
fo='output.txt';
var f1,f2:text;
a,b:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,a,b);
if (a=0) and (b=0) then writeln(f2,'Phuong trinh co vo so nghiem');
if (a<>0) then writeln(f2,-b/a:4:2);
if (a=0) and (b<>0) then writeln(f2,'Phuong trinh vo nghiem');
close(f1);
close(f2);
end.
const fi='dulieu.txt';
fo='ketqua.txt';
var f1,f2:text;
a,b:array[1..100]of integer;
n,i:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
n:=0;
while not eof(f1) do
begin
n:=n+1;
readln(f1,a[n],b[n]);
end;
for i:=1 to n do
begin
if (a[i]<b[i]) then writeln(f2,a[i])
else writeln(f2,b[i]);
end;
close(f1);
close(f2);
end.
const fi='dulieu.txt';
fo='ketqua.txt';
var f1,f2:text;
a,b,c,d:array[1..100]of integer;
i,n,dem,dem1:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
n:=0;
while not eof(f1) do
begin
n:=n+1;
readln(f1,a[n],b[n]);
end;
dem:=0;
dem1:=0;
for i:=1 to n do
if a[i]>b[i] then
begin
inc(dem);
inc(dem1);
c[dem]:=a[i];
d[dem]:=b[i];
end
else begin
inc(dem);
inc(dem1);
c[dem]:=b[i];
d[dem]:=a[i];
end;
for i:=1 to dem do
write(f2,c[i]:4);
writeln(f2);
for i:=1 to dem1 do
write(f2,d[i]:4);
close(f1);
close(f2);
end.
const fi='input.txt';
fo='soan.txt';
var f1,f2:text;
a:array[1..100]of integer;
i,n:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
n:=0;
while not eof(f1) do
begin
n:=n+1;
readln(f1,a[n]);
end;
for i:=1 to n do
if a[i]<0 then writeln(f2,a[i]:4);
close(f1);
close(f2);
end.