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;
map<int, int> mp;
int main() {
int n;
cin >> n;
while(n--) {
int key, value;
cin >> key >> value;
mp[key] += value;
}
for(auto& cur: mp) {
cout << cur.first << " " << cur.second << endl;
}
}
// 64 位输出请用 printf("%lld")
