题解 | #合并表记录#
合并表记录
https://www.nowcoder.com/practice/de044e89123f4a7482bd2b214a685201
这道题就是考map用法的
#include <iostream>
#include <map>
using namespace std;
int main()
{
int n;
cin >> n;
map<int, int> m;
int ind, val;
while (cin >> ind >> val) {
m[ind] += val;
}
for (map<int, int>::iterator it = m.begin(); it != m.end(); it++) {
cout << it->first << " " << it->second << endl;
}
}
查看2道真题和解析