1002. A+B for Polynomials (25)
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#include<cstdio>/*1.考虑边界2.考虑常数情况*/const int max_n=1010;double arr[max_n]={0}; //数组适合作为全局变量int main(){ int k,e,count=0; double c; scanf("%d",&k); for(int i=0;i<k;i++){ scanf("%d%lf",&e,&c); arr[e]=c; } scanf("%d",&k); for(int i=0;i<k;i++){ scanf("%d%lf",&e,&c); arr[e]+=c; } for(int i=0;i<max_n;i++){ if(arr[i]!=0)count++; } printf("%d",count); for(int i=max_n-1;i>=0;i--){ if(arr[i]!=0){ printf(" %d %.1lf",i,arr[i]); } } return 0;}
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