题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
#include <iostream>
#include <algorithm>
#include <map>
using namespace std;
int main(void)
{
map<int,int> mytable;
int n=0;
int index=0,value=0;
cin>>n;
for(int i=0;i<n;i++)
{
cin>>index>>value;
if(mytable.count(index)==0)
{
mytable[index]=value;
}
else
{
mytable[index]+=value;
}
}
map<int,int>::iterator it;
for(it=mytable.begin();it!=mytable.end();it++)
{
cout<<it->first<<" "<<it->second<<endl;
}
}
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