분할수 더블릿

#include <stdio.h>
 
int dp[100][100] = { 0 };
 
int main() {
    int n;
    scanf("%d", &n);
    getchar();
 
    for (int i = 1; i <= n; i++) {
        dp[i][i] = 1;
        dp[i][1] = 1;
    }
 
    for (int i = 1; i <= n; i++) {
        for (int j = 2; j <= n; j++) {
            dp[i + j][j] = dp[i + j - 1][j - 1] + dp[i][j];
        }
    }
 
    int idx = 0;
    for (int i = 1; i <= n; i++) {
        idx += dp[n][i];
    }
    printf("%d", idx);
}