关于A+B的题解

沉石鱼惊旋 @ 2022-02-26 15:52:37

by zhangyaiwei @ 2022-07-02 14:48:28

惊！

by zhangyaiwei @ 2022-07-02 15:24:19

那么本蒟蒻也来秀一秀

#include<bits/stdc++.h>
using namespace std;
int a,b;
string A,B,C;
string CAN(int a){
    string C;
    while(a!=0){
        C+='0'+a%10;
        a/=10;
    }
    return C;
}
string _CAN(int a){
    a=abs(a);
    string C;
    while(a!=0){
        C+='0'+(-(a%10));
        a/=10;
    }
    return C;
}
int main(){
    cin>>a>>b;
    if(a<0){
        A=_CAN(a);
    }
    else{
        A=CAN(a);
    }
    if(b<0){
        B=_CAN(b);
    }
    else{
        B=CAN(b);
    }
    unsigned int len=max(A.size(),B.size());
    unsigned int j=0;
    for(unsigned int i=0;i<len;i++){
        int ab=j;
        if(i<(A.size())){
            ab+=(A[i]-'0');
        }
        if(i<(B.size())){
            ab+=(B[i]-'0');
        }
        j=0;
        if(ab>=10){
            j=1;
            ab-=10;
        }
        else if(ab<0){
            j=-1;
            ab+=10;
        }
        C[i]=('0'+ab);
    }
    if(j!=0){
        cout<<j;
    }
    bool Zflag=true;
    for(int i=len-1;i>-1;i--){
        if(Zflag&&C[i]=='0'){
            continue;
        }
        Zflag=false;
        cout<<C[i];
    }
    if(Zflag){
        cout<<"0";
    }
}

by zhangyaiwei @ 2022-07-02 15:24:39

《高精a+b》

by 10chen01 @ 2022-07-20 11:14:14

官方C++题解骗人的，要用高精度long long做啦

by zhizhi_c @ 2022-08-30 20:31:00

@d2020csr 额……