Can anyone help me with what test case I am missing ,It is failing at test case 12,which is very large.Please help. Link to submission: http://codeforces.com/contest/551/submission/59558421

#include<bits/stdc++.h>
using namespace std;
vector<int> cnts(26),cnta(26),cntb(26);

int main(){
    string s,a,b;
    cin>>s>>a>>b;

    for(int i=0;i<a.size();i++){
        cnta[a[i]-'a']++;
    }
    for(int j=0;j<b.size();j++){
        cntb[b[j]-'a']++;
    }
    for(int i=0;i<s.size();i++){
        cnts[s[i]-'a']++;
    }
    int mn=INT_MAX;
    for(int i=0;i<26;i++){
        if(cnta[i]>0){
            mn=min(mn,cnts[i]/cnta[i]);
        }
    }
    for(int i=0;i<26;i++){
        cnts[i]=cnts[i]-mn*cnta[i];
    }
    int mn1=INT_MAX;
    for(int i=0;i<26;i++){
        if(cntb[i]>0){
            mn1=min(mn1,cnts[i]/cntb[i]);
        }
    }
    for(int i=0;i<26;i++){
        cnts[i]=cnts[i]-mn1*cntb[i];
    }
    string ans;
    while(mn--){
        ans+=a;
    }
    while(mn1--){
        ans+=b;
    }
    for(int i=0;i<26;i++){
        if(cnts[i]){
            while(cnts[i]--){
                ans+='a'+i;
            }
        }
    }
    cout<<ans<<endl;
}