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#! /usr/bin/node
"use strict"
function concat(a0, b0) {
if (b0 == 0) {
return 10 * a0;
}
let a = a0;
let b = b0;
while (b > 0) {
a *= 10;
b = Math.floor(b / 10);
}
return a + b0;
}
function concatenationvalue(a) {
let t = 0;
let ms = Math.floor((a.length - 1) / 2);
for (let i = 0; i <= ms; i++) {
const j = a.length - 1 - i;
if (j == i) {
t += a[i];
} else {
t += concat(a[i], a[j]);
}
}
return t;
}
if (concatenationvalue([6, 12, 25, 1]) == 1286) {
process.stdout.write("Pass");
} else {
process.stdout.write("FAIL");
}
process.stdout.write(" ");
if (concatenationvalue([10, 7, 31, 5, 2, 2]) == 489) {
process.stdout.write("Pass");
} else {
process.stdout.write("FAIL");
}
process.stdout.write(" ");
if (concatenationvalue([1, 2, 10]) == 112) {
process.stdout.write("Pass");
} else {
process.stdout.write("FAIL");
}
process.stdout.write("\n");
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