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AC了的人帮我帮帮!!搞不懂哦!!为什么总是wa了,哇了5次了。。谢谢!!!
#include<iostream>
using namespace std;
int main()
{
long T,N;
while((cin>>T>>N)&&T!=0)
{
char str[15];
long i,k;
long sum=0,max;
for(i=0;i<T;i++)
{
cin>>str;
cin>>k;
sum+=k;
}
max=T*N;
if(N!=0)
cout<<max-sum<<endl;
else
cout<<"0"<<endl;
}
return 0;
}
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