error: ambiguous overload for ‘operator>>’ in ‘std::cin >> p’

I have an error :

error: ambiguous overload for ‘operator>>’ in ‘std::cin >> p’

with the code:

Code:

#include "Time.h"

#include <iostream>
#include <sstream>
#include <string>

using namespace std;

// Time::Time(){
//   period=0;
//   seconds=0;
// }

Time::Time(const int p, const int m, const double s){
  if (p<=2) {
    while((p<0||p>2) || (m<0 || m>=20) || (s<0 || s>=60)) {
      cout<<"REGULATION\nIncorrect time, please try again."<<endl<<"Period: ";
      cin >> p;
      cout<<endl<<"Minutes: ";
      cin >> m;
      cout << endl << "Seconds: ";
      cin>>s;
      cout<<endl;
    }
  }
  else if(p>=3) {
    while((p<3) || (m<0 || m>=5) || (s<0 || s>=60)) {
      cout<<"OVERTIME\nIncorrect time, please try again."<<endl<<"Period: ";
      cin>>p;
      cout<<endl<<"Minutes: ";
      cin>>m;
      cout<<endl<<"Seconds: ";
      cin>>s;
      cout<<endl;
    }
  }
  period=p;
  seconds=(double)(m*60)+s;
}
//Time::~Time(){

  //deconstructor
//}

double Time::difference(const Time& other) const {
  //If in overtime
  int  diffPeriod=period-other.period;
  double  diffSeconds=seconds-other.seconds;
  double total=diffPeriod*15*60+diffSeconds;
  if (total>=0) {  
    return total;
  }
  else {
    return -1*total;
  }

}

const string Time::toString(){
  ostringstream a;
  int p,m;
  double s;

  p=period;
  m=(int)(seconds/60);
  s=(seconds-(m*60));
  if (s<10) {
    a << p << "|" << m << ":0" << s;
  
  }
  else {
    a << p << "|" << m << ":" << s;
  }
  return a.str();
}


bool Time::operator<(Time& other) {
  if (period<other.period) {
      return true;
  }
  if (period==other.period) {
    if (seconds<other.seconds) {
      return true;
    }
  }
  return false;
}

bool Time::operator==(Time& other) {
  if(period==other.period && seconds==other.seconds) {
    return true;
  }
  return false;
}

ostream& operator<<(ostream& out, Time& other) {
  return (out << other.toString());
}

That's everything in the file. Clearly I'm not trying to overload >>
Any help would be great.

If p is a const int, how do you intend to read into it?

Thanks, been looking at this code for a while and just overlooked it.