#include<cstdio>
#include<algorithm>
using namespace std;
static const int MAX_N = 100;
static const int MAX_V = 100;
static const int INF = 1 << 30;

int N, W;
int v[MAX_N], w[MAX_N];
int dp[MAX_N + 1][MAX_N * MAX_V + 1];

void solve(){
	fill(dp[0], dp[0] + MAX_N * MAX_V + 1, INF);
	dp[0][0] = 0;
	for(int i = 0; i < N; i++){
		for(int j = 0; j <= MAX_N * MAX_V; j++){
			if(j < v[i]){
				dp[i + 1][j] = dp[i][j];
			}else{
				dp[i + 1][j] = min(dp[i][j], dp[i][j - v[i]] + w[i]);
			}
		}
	}
	int res = 0;
	for(int i = 0; i <= MAX_N * MAX_V; i++) if(dp[N][i] <= W) res = i;
	printf("%d\n", res);
}

int main(){
	scanf("%d %d", &N, &W);
	for(int i = 0; i < N; i++) scanf("%d %d", &v[i], &w[i]);
	solve();
	return 0;
}