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(){
int n;
cin >> n;
map<int,int> dict;
int a,b;
while(n--){
cin >> a >> b;
dict[a]+=b;
}
for(auto x:dict){
cout << x.first << " " << x.second << endl;
}
}
利用map的有序性
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