๐จ ์ฐธ๊ณ ์ฝ๋
์ฝ๋
const fs = require('fs');
const input = +fs.readFileSync('/dev/stdin').toString().trim().split(' ');
let primes = [];
let check = new Array(input + 1).fill(true);
for (let i = 2; i <= Math.sqrt(input); i++) {
if (!check[i]) continue;
for (let j = i * i; j <= input; j += i) {
check[j] = false;
}
}
for (let i = 2; i <= input; i++) {
if (check[i]) primes.push(i);
}
let left = 0;
let right = 0;
let sum = primes[0];
let answer = 0;
while (left < primes.length && right < primes.length) {
if (sum === input) {
answer++;
}
if (sum < input) {
right++;
sum += primes[right];
} else {
sum -= primes[left];
left++;
}
}
console.log(answer);