알고리즘 & 자료구조/백준
백준 1806
by 신재권
2022. 9. 12.
package baekjoon.투포인터;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
class Main1806 {
static int S, N;
static int[] A;
private static void go() {
int R = 0, sum = 0, ans = N + 1;
for (int L = 1; L <= N; L++) {
sum -= A[L - 1];
while (R + 1 <= N && sum < S) {
R++;
sum += A[R];
}
if (sum >= S) {
ans = Math.min(ans, R - L + 1);
}
}
if (ans == N + 1) {
ans = 0;
}
System.out.println(ans);
}
public static void main(String[] args) throws Exception {
input();
go();
}
private static void input() throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
StringTokenizer st = new StringTokenizer(br.readLine());
N = Integer.parseInt(st.nextToken());
S = Integer.parseInt(st.nextToken());
st = new StringTokenizer(br.readLine());
A = new int[N + 1];
for (int i = 1; i <= N; i++) {
A[i] = Integer.parseInt(st.nextToken());
}
}
}