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> my_map;
int key_num,key,value;
cin >> key_num;
for (int i=0; i < key_num; i++) {
cin >> key >> value;
my_map[key] +=value;
}
for (const auto& record : my_map) {
cout << record.first << " " << record.second << endl;
}
return 0;
}
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