Queue #10

#include <fstream>
#include <iostream>
#include <vector>
#include <queue>

using namespace std;

vector<queue<int>> vec;

template <typename T>
void PUSH(int que_num, T value, vector<queue<T>>& vec)
{
  vec[que_num].push(value);
}

template <typename T>
void TOP(int que_num, vector<queue<T>>& vec, ofstream& out)
{
   out << vec[que_num].front() << endl;
}

template <typename T>
void POP(int que_num, vector<queue<T>>& vec, ofstream& out)
{
  T value = vec[que_num].front();
  vec[que_num].pop();
  out << value << endl;
}

int main()
{
  ifstream in("input.txt");
  ofstream out("output.txt");
  int queuesNumber;
  cin >> queuesNumber;
  vector<queue<int>> vec(queuesNumber);
  int value;
  int requestsNumber;
  cin >> requestsNumber;
  string request;
  string funcName;
  int que_num;

  for (int i = 0; i < requestsNumber; ++i) {
    cin >> request;
    int i1 = 0, i2;PUSH(100,1)
    i2 = request.find('(') - 1;
    funcName = request.substr(i1, i2);
    if (funcName == "PUSH")
    {
      i1 = i2 + 2;
      i2 = request.find(',') - 1;
      que_num = atoi(request.substr(i1, i2).c_str());
      i1 = i2 + 2;
      i2 = request.find(')') - 1;
      value = atoi(request.substr(i1, i2).c_str());
      PUSH(que_num, value, vec);
    }
    else if (funcName == "TOP")
    {
      i1 = i2 + 2;
      i2 = request.find(')') - 1;
      que_num = atoi(request.substr(i1, i2).c_str());
      TOP(que_num, vec, out);
    }
    else if (funcName == "POP")
    {
      i1 = i2 + 2;
      i2 = request.find(')') - 1;
      que_num = atoi(request.substr(i1, i2).c_str());
      POP(que_num, vec, out);
    }
    i1 = 0;
    i2 = 0;
  }
  in.close();
  out.close();

  return 0;
}