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#include <bits/stdc++.h> using namespace std; long long n; long long w; vector<pair<long long,long long>>v; long long dp[100005][105]; long long f(long long k, long long idx) { if(k==0) { return 0; } if(idx==n) { return 1e16; } if(dp[k][idx]!=-1) { return dp[k][idx]; } long long rez=1e16; if(k >= v[idx].second) rez=min(rez, f(k-v[idx].second,idx+1)+v[idx].first);///w rez=min(rez, f(k,idx+1)); return dp[k][idx]=rez; } int main() { cin>>n>>w; long long x,y; memset(dp,-1,sizeof dp); for(long long i=0;i<n;i++) { cin>>x>>y; v.push_back({x,y}); } for(long long i=100000;i>=0;i--) { if(f(i,0)<=w) { cout<<i; break; } } return 0; }
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