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#include <bits/stdc++.h>
using namespace std;
long long a,b;
int main()
{
freopen("sn.inp","r",stdin);
freopen("cn.out","w",stdout);
cin>>a>>b;
cout<<a*b;
return 0;
}
const fi='bt1.inp';
fo='bt1.out';
var f1,f2:text;
a,b:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,a,b);
writeln(f2,'Chu vi la: ',(a+b)*2);
writeln(f2,'Dien tich la: ',a*b);
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.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.
Uses crt;
Const fi='input.txt';
Fo='output.txt';
Var f1,f2:text;
A,b:array[1..100] of integer;
I,n:integer;
Begin
Clrscr;
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
Writeln('Chu vi hinh chu nhat thu ',i,' la: ',(a[i]+b[i])*2);
Writeln(f2,Chu vi hinh chu nhat thu ',i,' la: ',(a[i]+b[i])*2);
End;
Close(f1);
Close(f2);
Readln;
End.
uses crt;
const fi='mang.inp';
var f1:text;
a:array[1..10000]of integer;
i,n:integer;
begin
clrscr;
assign(f1,fi); reset(f1);
n:=0;
while not eof(f1) do
begin
n:=n+1;
read(f1,a[i]);
end;
for i:=1 to n do write(a[i]:4);
close(f1);
readln;
end.
uses crt;
const fi='hcn.dat';
fo='chuvi.out';
var f1,f2:text;
a,b:array[1..100]of integer;
n,i,j:integer;
begin
clrscr;
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
writeln(a[i]*b[i]);
for i:=1 to n do
writeln(f2,2*(a[i]+b[i]));
close(f1);
close(f2);
readln;
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.