1 #include<iostream>
2 #include<cstring>
3 #include<stdio.h>
4 using namespace std;
5 double res[
1001];
6 int main () {
7 int K, n,loop=
2,number =
0;
8 double a;
9 while(loop --
) {
10 cin >>
K;
11 for(
int i =
0; i < K; i++
) {
12 cin >> n >>
a;
13 if(res[n] ==
0) number++
;
14 res[n] +=
a;
15 if(res[n] ==
0) number--
;
16 }
17 }
18 if(number ==
0) {cout << number;
return 0;}
//注意！末尾不要留空格
19 cout << number <<
" ";
20 for(
int i =
1000; i >=
0; i--
) {
21 if(res[i] !=
0) {
22 printf(
"%d %.1f",i,res[i]);
23 number --
;
24 if(number !=
0) {
25 printf(
" ");
26 }
27 }
28 }
29 }
这题犯了 之前一直再犯的错误，就是 各种临界条件的判断，总是会漏想一些情况。
转载于:https://www.cnblogs.com/dcklm/p/10339412.html
