#include <bits/stdc++.h>
using namespace std;

const unsigned int INF = 1 << 30;
const int MAX_N = 110;
const int MAX_V = 10010;

int main() {
  unsigned int dp[MAX_N][MAX_V];
  int N;
  unsigned int W, weight[MAX_N], value[MAX_N];

  cin >> N >> W;
  for (int i = 0; i < N; ++i) {
    cin >> value[i] >> weight[i];
  }
  for (int i = 0; i < MAX_N; ++i) {
    for (int j = 0; j < MAX_V; ++j) {
      dp[i][j] = INF;
    }
  }

  dp[0][0] = 0;

  for (int i = 0; i < N; ++i) {
    for (int j = 0; j < MAX_V; ++j) {
      if (j >= value[i]) {
        dp[i + 1][j] = min(dp[i + 1][j],dp[i][j - value[i]] + weight[i]);
      }
      dp[i + 1][j] = min(dp[i + 1][j],dp[i][j]);
    }
  }

  unsigned int res = 0;
  for (int i = 0; i < MAX_V; ++i) {
    if (dp[N][i] <= W) {
      res = i;
    }
  }

  cout << res << endl;
  
  return 0;
}

