#include <iostream>
#include <cstring>
//#include <bits/stdc++.h>

using namespace std;


long long dp[101][100001];

int main()
{
    ios_base::sync_with_stdio(true);
    int n,W;
    cin>>n>>W;
    int sum = 0;
    for(int i=0;i<=n;i++)
    {
        for(int j=0;j<=100000;j++)
        {
            dp[i][j]=1e18;
        }
    }
    int value[n], weight[n];
    for(int i=0;i<n;i++)
    {
        cin  >> weight[i] >> value[i] ;
        sum += value[i];
    }
    dp[0][0]=0;
    for(int i=0;i<n;i++)
    {
        for(int val=0;val<=sum;val++)
        {
            dp[i+1][val]=min(dp[i+1][val],dp[i][val]);
            if(val+value[i]<=sum)
            {
                dp[i+1][val+value[i]]=min(dp[i+1][val+value[i]], dp[i][val]+weight[i]);
            }
        }
    }

    int ans=0;
    for(int i=0;i<=sum;i++)
    {
        if(dp[n][i] <= W) {
            ans = i;
        }
    }
    cout<<ans<<endl;
    return 0;
}