1.题目介绍
polynomial:多项式
exponent:指数
coefficient:系数
2.考察点,难度
高精度题,动态数组,难度易
3.解题代码
#include<cstdio>
using namespace std;
double result[2001] = {0};
int main()
{
int k1, k2, exp2;
double coe2;
scanf("%d", &k1);
// 开动态数组
int *exp1 = new int[k1];
double *coe1 = new double[k1];
for (int i = 0; i < k1; i++) scanf("%d%lf", exp1+i, coe1+i);
scanf("%d", &k2);
for (int i = 0; i < k2; i++){
scanf("%d%lf", &exp2, &coe2);
for (int j = 0; j < k1; j++)
result[exp1[j] + exp2] += coe1[j] * coe2;
}
int k = 0;
for (int i = 0; i < 2001; i++)
if (result[i] != 0) k++;
printf("%d",k);
for (int i = 2000; i >= 0; i--)
if (result[i] != 0)
printf(" %d %.1f", i, result[i]);
return 0;
}
4.原题地址
https://pintia.cn/problem-sets/994805342720868352/problems/994805509540921344