#include <bits/stdc++.h> // ver2.3.9
#include <complex.h>
//#include <boost/math/tools/minima.hpp>
//#include <boost/multiprecision/cpp_int.hpp>
#define fmin brent_find_minima
#define int long long
#define endl "\n"
#define ALL(v) (v).begin(),(v).end()
#define COUNT(a,k) upper_bound(ALL(a),k)-lower_bound(ALL(a),k)
#define BIGGER(a,k) a.end()-upper_bound(ALL(a),k)
#define SMALLER(a,k) lower_bound(ALL(a),k)-a.begin()
#define Vi vector<int>
#define VVi vector<Vi>
#define Vs vector<string>
#define Pii pair<int,int>
#define VPii vector<Pii>
#define Tiii tuple<int,int,int>
#define VTiii vector<Tiii>
#define PQi priority_queue<int>
#define PQir priority_queue<int,vector<int>,greater<int>>
#define pb push_back
#define mp make_pair
#define mt make_tuple
#define itos to_string
#define stoi stoll
#define FI first
#define SE second
#define cYES cout<<"YES"<<endl
#define cNO cout<<"NO"<<endl
#define cYes cout<<"Yes"<<endl
#define cNo cout<<"No"<<endl
#define cyes cout<<"yes"<<endl
#define cno cout<<"no"<<endl
#define sortr(v) sort(v,greater<>())
#define rep(i,a,b) for(int i=a;i<b;i++)
#define repeq(i,a,b) for(int i=a;i<=b;i++)
#define repreq(i,a,b) for(int i=a;i>=b;i--)
#define leng(n) (int)(log10(n)+1)
#define dem(a,b) ((a+b-1)/(b))
#define Vin(a) rep(iI,0,a.size())cin>>a[iI]
#define INF 3000000000000000000  //  3.0*10^18(MAXの1/3くらい)
#define MAX LLONG_MAX
#define PI 3.141592653589793238462
#define MOD 1000000007  //  10^9 + 7

using namespace std;
/* fmin(f,L,R,100) で関数の最小値を(x,min)で返す　*/
//using boost::math::tools::brent_find_minima;
/* cpp_int (任意の長さのint) */
//using boost::multiprecision::cpp_int;

/* デバッグ用 */
void Vout(auto a){if(a.size()==0) cout<<"."<<endl;
else{rep(i,0,a.size()-1)cout<<a[i]<<' ';if(a.size()>0)cout<<a.back()<<endl;}return;}
void Verr(auto a){if(a.size()==0) cerr<<"."<<endl;
else{rep(i,0,a.size()-1)cerr<<a[i]<<' ';if(a.size()>0)cerr<<a.back()<<endl;}return;}
void VVout(auto a){if(a.size()==0)cout<<"."<<endl;
else{rep(i,0,a.size())Vout(a[i]);}return;}
void VVerr(auto a){if(a.size()==0)cerr<<"."<<endl;
else{rep(i,0,a.size())Verr(a[i]);}return;}
void VPout(auto a){if(a.size()==0)cout<<"."<<endl;
else{rep(i,0,a.size())cout<<a[i].FI<<' '<<a[i].SE<<endl;}return;}
void VPerr(auto a){if(a.size()==0)cerr<<"."<<endl;
else{rep(i,0,a.size())cerr<<a[i].FI<<' '<<a[i].SE<<endl;}return;}

/* 便利関数 */
int gcd(int a,int b){return b?gcd(b,a%b):a;} // 最大公約数gcd
int lcm(int a,int b){return a/gcd(a,b)*b;} // 最小公倍数lcm
int mypow(int x, int n, int m){ // 累乗x^n(mod m) O(log(n))
if(n==0)return 1;if(n%2==0)return mypow(x*x%m,n/2,m);else return x*mypow(x,n-1,m)%m;}
int scomb(int n, int r){if((n-r)<r)r=n-r; // nCr(小さい場合)
int a=1;for(int i=n;i>n-r;--i){a=a*i;}for(int i=1;i<r+1;++i){a=a/i;}return a;}
int comb(int n, int r){if((n-r)<r)r=n-r; // nCr(%MOD)
int a=1;for(int i=n;i>n-r;--i){a=a*i%MOD;}for(int i=1;
i<r+1;++i){a=a*mypow(i,MOD-2,MOD)%MOD;}return a%MOD;}
Vi stpowV(){Vi a(100001);
a[0]=1;repeq(i,1,100000)a[i]=a[i-1]*i%MOD;return a;}
//Vi stpow = stpowV();  // 階乗配列(%MOD)
Vi Vsum(Vi &v){Vi S(v.size()+1);rep(i,1,S.size())S[i]+=v[i-1]+S[i-1];return S;}// 累積和
int digit(int k,int i){string s = itos(k);return s[s.size()-i]-'0';} // i桁目の数字
void press(auto &v){v.erase(unique(ALL(v)),v.end());} // 圧縮
Vi zip(Vi b){int Z=b.size(); // 座標圧縮
Pii p[Z+10];int a=b.size();Vi l(a);for(int i=0;i<a;i++)
p[i]=mp(b[i],i);sort(p,p+a);int w=0;for(int i=0;i<a;i++)
{if(i&&p[i].first!=p[i-1].first)w++;l[p[i].second]=w;}return l;}
Vi beki2V(){Vi a(61);int q = 1;rep(i,0,61){a[i]=q;q*=2;}return a;}
//Vi beki2 = beki2V(); // 2^n配列
int modiv(int a,int b){return a*mypow(b,MOD-2,MOD)%MOD;} // a÷b(MOD環境)



signed main() {
  cin.tie(0);cout.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(12);
  int n,ma,mb;
  cin >> n >> ma >> mb;
  
  int n1,n2;
  n1 = n/2;
  n2 = n-n1;
  
  VTiii gr1(n1),gr2(n2);
  int qw,er,ty;
  rep(i,0,n1){
    cin >> qw >> er >> ty;
    gr1[i] = mt(qw,er,ty);
  }
  rep(i,0,n2){
    cin >> qw >> er >> ty;
    gr2[i] = mt(qw,er,ty);
  }
  
  
  
  
  VTiii mix1,mix2;
  
  
  int ct1 = mypow(2,n1,INF);
  rep(i,0,ct1){
    
    int nowi = i;
    int amix = 0,bmix = 0,pr = 0;
    
    rep(j,0,n1){
      if(nowi%2 == 1){
        amix += get<0>(gr1[j]);
        bmix += get<1>(gr1[j]);
        pr += get<2>(gr1[j]);
      }
      nowi /= 2;
    }
    mix1.pb(mt(amix,bmix,pr));
  }
  
  int ct2 = mypow(2,n2,INF);
  rep(i,0,ct2){
    
    int nowi = i;
    int amix = 0,bmix = 0,pr = 0;
    
    rep(j,0,n2){
      if(nowi%2 == 1){
        amix += get<0>(gr2[j]);
        bmix += get<1>(gr2[j]);
        pr += get<2>(gr2[j]);
      }
      nowi /= 2;
    }
    mix2.pb(mt(amix,bmix,pr));
  }
  
  set<int> ok;
  Vi okv(0);
  Vi oka(0),okb(0);
  
  rep(i,1,INF){
    if(ma*i > 25 || mb*i > 25) break;
    ok.insert(ma*i + mb*i*100000);
    okv.pb(ma*i + mb*i*100000);
  }
  
  
  VPii memo;
  rep(i,0,mix2.size()){
    memo.pb(mp(get<0>(mix2[i])+100000*get<1>(mix2[i]),get<2>(mix2[i])));
  }
  
  sort(ALL(memo));
  
  Vi x2,p2;
  rep(i,0,memo.size()){
    x2.pb(memo[i].FI);
    p2.pb(memo[i].SE);
  }
  
  int ans = INF;
  
  int qwe = okv.size();
  
  rep(qw,0,qwe){
    int time = clock();
    if(time >= 1900000) break;
    int goal = okv[qw];
    rep(i,0,mix1.size()){
      
      
      
      int now = get<0>(mix1[i]) + get<1>(mix1[i])*100000;
      int motomu = goal-now;
      int l = COUNT(x2,motomu);
      if(COUNT(x2,motomu)==0) continue;
      int st = SMALLER(x2,motomu);
      rep(j,st,st+l) {
        ans = min(ans,p2[j]+get<2>(mix1[i]));
      }
    }
  }
  
  if(ans <= INF/2) cout << ans << endl;
  else cout << -1 << endl;
  
  //cout << clock() << endl;
  return 0;
}


Measured memory_bytes: 87652