这个题感觉思路对上了,但对后还是没有完全对,借鉴了大神的代码
#include <iostream>
using namespace std;
int main() {
float c[1001] = {0};
int m, n, t;
float num;
cin >> m;
for(int i = 0; i < m; i++) {
cin >> t >> num;
c[t] += num;
}
cin >> n;
for(int i = 0; i < n; i++) {
cin >> t >> num;
c[t] += num;
}
int cnt = 0;
for(int i = 0; i < 1001; i++) {
if(c[i] != 0) {
cnt++;
}
}
cout << cnt;
for(int i = 1000; i >= 0; i--) {
if(c[i] != 0.0) {
cout << " ";
printf("%d %.1f", i, c[i]);
}
}
return 0;
}
??正文结束??