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int duplicates(vector<string>name, vector<int>weight, vector<int>price){
    unordered_map<string,pair<int,int>m;
    unordered_map<string,int>freq;
    int count = 0;
    for(int i=0;i<name.size();i++){
        m[name[i]] = make_pair(weight[i], price[i]);
        if(m.find(name[i].first)!=m.end() && name[i].second)!=m.end()){
            freq[name[i]]++;
        }
    }
    for(auto p: freq){
        if(p.second>1){
            count++;
        }
    }
    return count;
}

prog.cpp:1:16: error: ‘vector’ was not declared in this scope
 int duplicates(vector<string>name, vector<int>weight, vector<int>price){
                ^~~~~~
prog.cpp:1:23: error: ‘string’ was not declared in this scope
 int duplicates(vector<string>name, vector<int>weight, vector<int>price){
                       ^~~~~~
prog.cpp:1:23: note: suggested alternative: ‘struct’
 int duplicates(vector<string>name, vector<int>weight, vector<int>price){
                       ^~~~~~
                       struct
prog.cpp:1:30: error: ‘name’ was not declared in this scope
 int duplicates(vector<string>name, vector<int>weight, vector<int>price){
                              ^~~~
prog.cpp:1:36: error: ‘vector’ was not declared in this scope
 int duplicates(vector<string>name, vector<int>weight, vector<int>price){
                                    ^~~~~~
prog.cpp:1:43: error: expected primary-expression before ‘int’
 int duplicates(vector<string>name, vector<int>weight, vector<int>price){
                                           ^~~
prog.cpp:1:55: error: ‘vector’ was not declared in this scope
 int duplicates(vector<string>name, vector<int>weight, vector<int>price){
                                                       ^~~~~~
prog.cpp:1:62: error: expected primary-expression before ‘int’
 int duplicates(vector<string>name, vector<int>weight, vector<int>price){
                                                              ^~~
prog.cpp:1:71: error: expression list treated as compound expression in initializer [-fpermissive]
 int duplicates(vector<string>name, vector<int>weight, vector<int>price){
                                                                       ^

Standard output is empty