A1002 A+B for Polynomials (25分)

1002 A+B for Polynomials (25分)

Meaning of the questions: multi-factor additions
can be made by constructing an array

#include <stdio.h>
int main(){
	int n,m;
	double array[1010]={0};
	scanf("%d",&n);
	while(n--!=0){
		int x;double y;
		scanf("%d %lf",&x,&y); 
		array[x]+=y;
		
	}
	scanf("%d",&m); 
	while(m--!=0){
		int x;double y;
		scanf("%d %lf",&x,&y); 
		array[x]+=y;
	}
	int count;
	for (int i=0;i<1010;i++){
		if(array[i]!=0){
			count++;
		}
	}
	printf("%d",count);
	for(int i=1010-1;i>=0;i--){
		if(array[i]!=0){
			printf(" %d %0.1f",i,array[i]);
		} 
		
	}
}