ВС
Виталий Соснин
writeln(
x1 * (x2 + x3) * (x4 + x5 + x6) * (x7 + x8 + x9 + x10) * (x11 + x12 + x13 +
x14 + x15) * (x16 + x17 + x18 + x19 + x20 + x21) * (x22 + x23 + x24 + x25 + x26
+ x27 + x28) * (x29 + x30 + x31 + x32 + x33 + x34 + x35 + x36) * (x37 + x38 +
x39 + x40 + x41 + x42 + x43 + x44 + x45) * (x46 + x47 + x48 + x49 + x50 + x51 +
x52 + x53 + x54 + x55)
);
Как-то так.