同样的代码用g++的时候就是TLE但是换成c++竟然通过了。。。。虽然时间是1.5s效率非常非常低。。
代码：
#include <iostream>
#include <iomanip>
#include <locale>
#include <sstream>
#include <map>
#include <string>
using namespace std;



int stdnumber (const string & s)
{
  int size = s.size();
  int result=0;
  for (int i = 0; i<size; i++)
    {
      char aux = s[i];
      if (aux == '-') continue;
      else if (aux >= '0' && aux<= '9')
	result = result*10+aux-'0';
      else if (aux >= 'A' && aux <= 'R')
	result= result *10 + ((aux-'A')/3+2);
      else if (aux >= 'S' && aux <= 'Y')
	result = result * 10+((aux-'A' - 1) /3+2);
      //cout<<aux<<" "<<result<<endl;
    }
  return result;
}

int main (void)
{
  int length;
  cin>> length;
  map<int,int> dic;
  bool duplicated = false;
  string s;
  for (int i =0 ; i< length ;i++)
    {
      cin>>s;
      int number = stdnumber(s);
      //cout<<number<<endl;
      dic[number]++;
    }
  
  for (map<int,int>::iterator it = dic.begin(); it != dic.end();it++)
    {

      if (it-> second != 1)
	{
	  string str;
	  ostringstream convert;
	  convert<< (it->first);
	  str = convert.str();
	  for (int i = str.size();i<7;i++)
	    str.insert(0,1,'0');
	  //cout<<str<<endl;
	  duplicated = true;
	  cout<<(str.insert(3,1,'-'))<<" "<<it->second<<endl;
	}
    }
  if (!duplicated) cout<<"No duplicates. ";
  
}

• Re:额。。菜鸟求教。。c++的编译效率比g++要高么？ (1614) towelie 2014-01-05 23:00:30