URAL1048[Superlong sums]

水水的高精加法，然后让我明白了，库的确效率低。我起初用std::stack（因为要倒序输出），结果TLE，无语。

CODE:

/*

PROGRAM: $PROGRAM

AUTHOR: Su Jiao

DATE: 2010-3-25

DESCRIPTION:

$DESCRIPTION

*/

#include <iostream>

using std::cin;

using std::cout;

#include <fstream>

using std::ifstream;

using std::ofstream;

#include <sstream>

using std::stringstream;

using std::endl;

#include <vector>

using std::vector;

#include <string>

using std::string;

#include <stack>

using std::stack;

#include <queue>

using std::queue;

#include <set>

using std::set;

#include <map>

using std::map;

using std::pair;

using std::make_pair;

#include <algorithm>

using std::sort;

#include <cassert>

//using std::assert;

 

class Application

{

      public:

      Application()

      {

      }

      int run()

      {

          int N;

          cin>>N;

          vector<pair<int,int> > data;

          data.resize(N);

          for (int i=0;i<N;i++)

              cin>>data[i].first>>data[i].second;

         

          string answer;

          answer.resize(N);

          int over=0;

          for (int i=N-1;i>=0;i–)

          {

              answer[i]=’0’+((data[i].first+data[i].second+over)%10);

              over=(data[i].first+data[i].second+over)/10;

          }

          cout<<answer<<endl;

          return 0;

      }

};

 

int main()

{

    Application app;

    return app.run();

}