不是算乘积吗
by Salt_conch @ 2024-04-09 20:09:29
还有，这道题要用高精度
by songyuxuan090318 @ 2024-04-09 20:15:58
@[songyuxuan090318](/user/730157) 我不会
by mihongyu123456 @ 2024-04-09 20:41:33
@[mihongyu123456](/user/1229140) 不会就去学吖，可以看看题解
by songyuxuan090318 @ 2024-04-09 20:56:53
@[songyuxuan090318](/user/730157) 我们老师不让看
by mihongyu123456 @ 2024-04-09 21:02:11
@[mihongyu123456](/user/1229140) 然后他还让你做？
by songyuxuan090318 @ 2024-04-09 21:08:22
@[songyuxuan090318](/user/730157) 他没讲吗？
by songyuxuan090318 @ 2024-04-09 21:08:33
我在刷题（有些老师没讲）
by mihongyu123456 @ 2024-04-09 21:14:25
@[mihongyu123456](/user/1229140)
真牛逼.没讲别乱```cpp
#include<bits/stdc++.h>
using namespace std;
int r[2010],l[2010],s[5000];
int main(){
string a,b;
cin>>a>>b;
reverse(a.begin(),a.end());
reverse(b.begin(),b.end());
string ans="";
int t1=a.size(),t2=b.size();
for(int i=0;i<t1;i++){
r[i+1]=(int)(a[i]-'0');
}
for(int i=0;i<t2;i++){
l[i+1]=(int)(b[i]-'0');
}
int q=0;
for(int i=1;i<=t1;i++){
for(int j=1;j<=t2;j++){
s[j+q]=s[j+q]+r[i]*l[j];
}
for(int k=1;k<=t2+q;k++){
if(s[k]>9){
s[k+1]=s[k+1]+s[k]/10;
s[k]%=10;
}
}
q++;
}
int uuu=1;
if(r[t1]*l[t2]>9)uuu=0;
for(int i=min(t1,t2)+q-uuu;i>=1;i--){
cout<<s[i];
}
return 0;
}
```
作
by chenbingjie @ 2024-04-14 19:55:43
@[mihongyu123456](/user/1229140)
不小心卡BUG了```
#include<bits/stdc++.h>
using namespace std;
int r[2010],l[2010],s[5000];
int main(){
string a,b;
cin>>a>>b;
reverse(a.begin(),a.end());
reverse(b.begin(),b.end());
string ans="";
int t1=a.size(),t2=b.size();
for(int i=0;i<t1;i++){
r[i+1]=(int)(a[i]-'0');
}
for(int i=0;i<t2;i++){
l[i+1]=(int)(b[i]-'0');
}
int q=0;
for(int i=1;i<=t1;i++){
for(int j=1;j<=t2;j++){
s[j+q]=s[j+q]+r[i]*l[j];
}
for(int k=1;k<=t2+q;k++){
if(s[k]>9){
s[k+1]=s[k+1]+s[k]/10;
s[k]%=10;
}
}
q++;
}
int uuu=1;
if(r[t1]*l[t2]>9)uuu=0;
for(int i=min(t1,t2)+q-uuu;i>=1;i--){
cout<<s[i];
}
return 0;
}
```
by chenbingjie @ 2024-04-14 19:56:43