题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
#include <bits/stdc++.h>
using namespace std;
int main() {
int n;
cin >> n;
map<int,int> input;
while(n--){
int i, j;
cin >> i >> j;
input[i] += j;
}
for(auto x : input) cout << x.first << ' '<< x.second << endl;
}