CodeForces 5A - Chat Servers Outgoing Traffic

1、理解题意，向在线的人发消息，计算长度

2、使用cin.getline()读入数据

#include <iostream>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <iomanip>
#include <algorithm>
#include <cctype>
#include <stack>
#include <queue>
#include <string>
#include <cstring>
#include <iomanip>
#include <set>
#include <vector>
#include <cstdio>
#include <stack>
#include <sstream>
#include <cstring>
#include <map>
using namespace std;
#define TEST
int main()
{
  /* #ifdef TEST
   freopen("C:\\Users\\MrZis\\Desktop\\input.txt","r",stdin);
   freopen("C:\\Users\\MrZis\\Desktop\\output.txt","w",stdout);
   #endif*/
   char str[10005];
   int sum=0,num=0;
   while(cin.getline(str,10005))
   {
    if(str[0]=='+')
        num++;
    else if(str[0]=='-')
        num--;
    else
    {
     int lenth=strlen(str);
      for(int i=0;i<lenth;i++)
       {
        int tmp1=0,tmp2=0;
        if(str[i]==':')
          {
           tmp1=i;
           tmp2=num*(lenth-(tmp1+1));
           sum+=tmp2;
          }
        } 
     }
   }
   cout<<sum;
    return 0;
}