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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='dulieu.txt';
var f1:text;
a,b:array[1..100]of integer;
n,i:integer;
begin
clrscr;
assign(f1,fi); reset(f1);
n:=0;
while not eof(f1) do
begin
n:=n+1;
readln(a[n],b[n]);
end;
for i:=1 to n do
writeln(a[i]+b[i]);
close(f1);
readln;
end.
const fi='hcn.inp';
fo='hcn.out';
var f1,f2:text;
a,b:array[1..100]of integer;
i,j,n:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
n:=0;
while not eof(f1) do
begin
inc(n);
readln(f1,a[n],b[n]);
end;
for i:=1 to n do
writeln(f2,2*(a[i]+b[i]),' ',a[i]*b[i]);
close(f1);
close(f2);
end.
const fi='hcn.inp';
fo='hcn.out';
var f1,f2:text;
a,b:array[1..100]of integer;
i,j,n:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
n:=0;
while not eof(f1) do
begin
inc(n);
readln(f1,a[n],b[n]);
end;
for i:=1 to n do
writeln(f2,2*(a[i]+b[i]),' ',a[i]*b[i]);
close(f1);
close(f2);
end.
const fi='hcn.txt';
fo='ketqua.txt';
var f1,f2:text;
a,b:array[1..100]of integer;
n:integer;
cv,dt:real;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
n:=0;
while not eof(f1) do
begin
inc(n);
readln(f1,a[n],b[n]);
end;
for i:=1 to n do
begin
cv:=(a[i]+b[i])/2;
dt:=a[i]*b[i];
writeln(f2,cv:4:2,' ',dt:4:2);
end;
close(f1);
close(f2);
end.
uses crt;
const fi='tamgiac.dat';
var f1:text;
a,b,c:array[1..100]of real;
n,i,j,k,dem:integer;
begin
clrscr;
assign(f1,fi); reset(f1);
n:=0;
while not eof(f1) do
begin
inc(n);
readln(f1,a[n],b[n],c[n]);
end;
dem:=0;
for i:=1 to n do
for j:=1 to n do
for k:=1 to n do
if (i=j) and (j=k) then
begin
if (a[i]+b[j]>c[k]) and (a[i]+c[k]>b[j]) and (c[k]+b[j]>a[i]) then
begin
if (a[i]=b[j]) and (a[i]<>c[k]) and (b[j]<>c[k]) then inc(dem);
if (a[i]=c[k]) and (a[i]<>b[j]) and (c[k]<>b[j]) then inc(dem);
if (b[j]=c[k]) and (b[j]<>a[i]) and (c[k]<>a[i]) then inc(dem);
end;
end;
writeln(dem);
readln;
end.