题目
This time, you are supposed to find A+B where A and B are two polynomials.
Input
Each input file contains one test case. Each case occupies 2 lines, and each line contains the information of a polynomial: K N1 aN1 N2 aN2 … NK aNK, where K is the number of nonzero terms in the polynomial, Ni and aNi (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
题解
#include<iostream>
using namespace std;
int main(){
float c[1001]={0};// zuida 2 you 3ge shu
int k,m,n;
float a;//if n= axiang+
scanf("%d",&k);
for(int i=0;i<k;i++){
scanf("%d%f",&n,&a);
c[n]+=a;
}
scanf("%d",&m);
for(int i=0;i<m;i++){
scanf("%d%f",&n,&a);
c[n]+=a;
}
int count=0;
for(int i=0;i<1001;i++){
if(c[i]!=0) count++;
}
printf("%d",count);
for(int i=1000;i>=0;i--){
if(c[i]!=0.0){
printf(" %d %0.1f",i,c[i]);
}
}
return 0;
}
这里犯得错是printf的格式有问题