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用了n多数据都真确为什么WA?#include <iostream>
using namespace std;
void main()
{
int i,num=0,n,a,b,t=-1,k;
cin>>n;
while(n--)
{
cin>>a>>b;
k=a+b;
if(k<9)
{
if(t!=-1)
cout<<t;
if(num)
{
for(i=0;i<num;i++)
cout<<9;
num=0;
}
t=k;
if(n==0)cout<<t;
}
else if(k==9)
{
if(t==-1)t=k;
if(n)num++;
else
{
cout<<t;
for(i=0;i<num+1;i++)
cout<<9;
}
}
else
{
t++;
cout<<t;
if(num)
{
for(i=0;i<num;i++)cout<<0;
num=0;
}
t=k%10;
if(n==0)cout<<t;
}
}
cout<<endl;
}
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