题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
#include <iostream>
#include <map>
using namespace std;
int main() {
map<int, int>m;
int n,a,b;
cin>>n;
while(n--){
cin>>a>>b;
m[a]+=b;
}
for(auto i:m){
cout<<i.first<<" "<<i.second<<endl;
}
return 0;
}