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uses crt;
const fi='dulieu.dat';
var f1:text;
a,b,p,s: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(a[n],b[n]);
end;
for i:=1 to n do
begin
p[i]:=(a[i]+b[i])/2;
s[i]:=a[i]*b[i];
end;
for i:=1 to n do
writeln(p[i]:4:2,' ',s[i]:4:2);
close(f1);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
long long a[1000],n,i;
int main()
{
freopen("so.inp","r",stdin);
freopen("so.out","w",stdout);
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
for (i=1; i<=n; i++)
if (a[i]%2==0) cout<<a[i]<<" ";
return 0;
}
const fi='tong.inp';
fo='tong.out';
var f1,f2:text;
a:array[1..100]of integer;
n,i,t:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,n);
for i:=1 to n do
read(f1,a[i]);
t:=0;
for i:=1 to n do
t:=t+a[i];
writeln(f2,t);
close(f1);
close(f2);
end.
const fo='int.txt';
fo='out.txt';
var f1,f2:text;
m,n:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,m);
readln(f1,n);
writeln(f2,m+n);
close(f1);
close(f2);
end.
uses crt;
const fi='dst.txt';
var f1:text;
a,b:integer;
begin
clrscr;
assign(f1,fi); reset(f1);
readln(f1,a);
readln(f1,b);
writeln('Tong cua hai so la: ',a+b);
writeln('Gia tri tuyet doi hieu hai so la: ',abs(a-b));
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.
câu cuối là 2 mũ 64 nha mn
#include <bits/stdc++.h>
using namespace std;
double a,b;
int main()
{
freopen("ab.inp","r",stdin);
freopen("ab.out","w",stdout);
cin>>a>>b;
cout<<fixed<<setprecision(1)<<a+b<<endl;
cout<<fixed<<setprecision(1)<<a-b;
return 0;
}