A+B for Polynomials

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本文详细介绍了如何通过编程实现输入多项式的系数和指数，并计算它们的和的过程。利用C++语言，读者可以跟随示例代码，了解如何处理输入数据、执行计算以及输出结果，特别关注了细节如数据类型、循环结构和格式化输出。

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Input

Each input file contains one test case. Each case occupies 2 lines, and each line contains the information of a polynomial: K N1 a_N1 N2 a_N2 ... NK a_NK, where K is the number of nonzero terms in the polynomial, Ni and a_Ni (i=1, 2, ..., K) are the exponents and coefficients, respectively. It is given that 1 <= K <= 10，0 <= NK < ... < N2 < N1 <=1000.

Output

For each test case you should output the sum of A and B in one line, with the same format as the input. Notice that there must be NO extra space at the end of each line. Please be accurate to 1 decimal place.

Sample Input

2 1 2.4 0 3.2
2 2 1.5 1 0.5

Sample Output

3 2 1.5 1 2.9 0 3.2

#include <iostream>
#include <iomanip>
using namespace std;
float a[1001]={0.0};
int main()
{
	int m,n,t,cnt=0;
	float p;
	cin>>m;
	while(m--)
	{
		cin>>t>>p;
		a[t]=p;
	}
	cin>>n;
	while(n--)
	{
		cin>>t>>p;
		a[t]=a[t]+p;
	}
	for(int i=1000;i>=0;--i)
	{
		if(a[i])
			cnt++;
	}
	cout<<cnt;
	for(int i=1000;i>=0;--i)
	{
		if(a[i]!=0)
			cout<<" "<<i<<" "<<fixed<<setprecision(1)<<a[i];//设置小数点后1位
	}
	cout<<endl;
	return 0;
}