import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer NW = new StringTokenizer(br.readLine());

        int N = Integer.parseInt(NW.nextToken());
        int W = Integer.parseInt(NW.nextToken());
        long INF = Long.MAX_VALUE;

        long[] dp = new long[10001]; // 무게를 담는 dp 
        
        Arrays.fill(dp, INF);
        int[][] wv_list = new int[N][2];
        dp[0] = 0;
        
        for (int i=0; i<N; i++) {
            NW = new StringTokenizer(br.readLine());
            wv_list[i][0] = Integer.parseInt(NW.nextToken());
            wv_list[i][1] = Integer.parseInt(NW.nextToken());
        }

        
        for (int i=0; i<N; i++) {
            
            int this_w = wv_list[i][0];
            int this_v = wv_list[i][1];
            
            for (int j=10000-this_v; j >=0; j--) {
                if (dp[j] == INF) continue;
                
                dp[j+this_v] = Math.min(dp[j+this_v], dp[j]+this_w);
                
            }
        }


        
        for (int i=10000; i>=0; i--) {
            // i개 value고 안에 dp[i]가 무게임 
            if (dp[i] <=W ) {
            System.out.println(i);
            break;
                
            }    
        }
        
        

        
        
        
    }
}