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PATA1009 Product of Polynomials
Output Specification:
For each test case you should output the product 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 up to 1 decimal place.
Sample Input:
2 1 2.4 0 3.2
2 2 1.5 1 0.5
Sample Output:
3 3 3.6 2 6.0 1 1.6
#include<cstdio>
#include<iostream>
#define max 2001
using namespace std;
struct Poly{
int exp;
double cof;
} poly[1001];
double ans[2001];
int main()
{
int n,m,number=0;
scanf("%d",&n);
for(int i=0;i<n;i++)
{
scanf("%d %lf",&poly[i].exp,&poly[i].cof);
}
scanf("%d",&m);
for(int i=0;i<m;i++)
{
int exp;
double cof;
scanf("%d %lf",&exp,&cof);
for(int j=0;j<n;j++)
{
ans[exp+poly[j].exp]+=(cof*poly[j].cof);
}
}
for(int i=0;i<=2000;i++)
{
if(ans[i]!=0.0)
{
number++;
}
}
cout<<number;
for(int i =2000;i>=0;i--)
{
if(ans[i]!=0.0)
{
printf(" %d %.1lf",i,ans[i]);
}
}
return 0;
}