@[feizhukkksc03](/user/971024)
```
#include<iostream>
using namespace std;
long long c[1000005] = {0},jj1[1000005],jj2[1000005];
int main()
{
string a,b;
cin>>a>>b;
int lena=a.size(),lenb=b.size(),lenc = lena + lenb;
for(int i=lena - 1;i>=0;i--) jj1[i] = a[lena-i-1] - '0';
for(int i=lena - 1;i>=0;i--) jj2[i] = b[lenb-i-1] - '0';
for(int i=0;i<lena;i++)
{
for(int j=0;j<lenb;j++)
{
c[i + j] += jj1[i] * jj2[j];
}
}
for(int i = 0;i < lenc;i++)
{
c[i + 1] += c[i] / 10;
c[i] %= 10;
}
while (c[lenc - 1] == 0 && lenc > 1)
lenc--;
for(int i=lenc - 1;i>=0;i--) cout<<c[i];
return 0;
}
```
给个关注呗~~
by wuboyan714 @ 2024-02-25 12:39:57
ok
by 违规用户名971024 @ 2024-02-25 13:14:53