var i,j,n,k,k1,k2,k3: integer; bb: boolean;
a: array of integer;
begin
write('N = ');
readln(n);
if ((n mod 3 = 0) and (n<>0)) then begin
write('K1 = ');
readln(k1);
write('K2 = ');
readln(k2);
write('K3 = ');
readln(k3);
setlength(a,n);
for i:=0 to n-1 do begin
write('Заполним номер ',i+1,' -> ');
readln(a[i]);
end;
i:=0;
while (i<n) do
begin
a[i]:=k1-a[i];
a[i+1]:=k2-a[i+1];
a[i+2]:=k3-a[i+2];
inc(i,3);
end;
write('K = ');
readln(k);
for i:=0 to n-2 do
if (a[i]+a[i+1]>=k) then begin write('В комнатах ',i+1,' и ',i+2,' есть ',a[i]+a[i+1],' свободных мест'); bb:= true; end;
if (bb=false) then writeln(0);
end else writeln('Введите число кратное 3 и неравное 0');
readln;
end.
#include <iostream>
using ll = long long;
using ld = long double;
#define yes cout << "YES" << "\n"
#define no cout << "NO" << "\n"
#define three cout << "Равносторонний"
#define two cout << "Равнобедренный"
#define one cout << "Разносторонний"
using namespace std;
bool exist(ll a, ll b, ll c){
return (a + b > c) && (a + c > b) && (b + c > a);
}
void type(ll a, ll b, ll c){
if(a == b && b == c)
three;
else if(a == b || b == c || a == c)
two;
else
one;
}
signed main() {
ll a,b,c;
cin >> a >> b >> c;
if(exist(a,b,c)){
yes;
type(a,b,c);
} else
no;
}
