60分，求助dalao们

Prince0618 @ 2024-10-05 23:52:04

#include<bits/stdc++.h>
#include<cctype>
using namespace std;
int count(int a){
    int ans=0; 
    if(a==0) return ans+1;
    while(a!=0){
        a/=10;
        ans+=1;
    }
    return ans;
} 
int main(){
    int i,a,b;
    char c;
    cin>>i;
    for(int j=0;j<i;j++){
        cin>>c;
        if(c>='a'&&c<='c') cin>>a>>b;
        if(c!='a'&&c!='b'&&c!='c'){
            cin>>a>>b;
            a+=(c-'0')*(10^count(a));
            cout<<a<<"+"<<b<<"="<<a+b<<endl;
            cout<<2+count(a)+count(b)+count(a+b)<<endl; 
        }
        if(c=='a'){
            cout<<a<<"+"<<b<<"="<<a+b<<endl;
            cout<<2+count(a)+count(b)+count(a+b)<<endl;
        }
        else if(c=='b'){
            cout<<a<<"-"<<b<<"="<<a-b<<endl;
            if(a-b<0) cout<<3+count(a)+count(b)+count(a-b)<<endl;
            else cout<<2+count(a)+count(b)+count(a-b)<<endl;
        }
        else if(c=='c'){
            cout<<a<<"*"<<b<<"="<<a*b<<endl;
                                cout<<2+count(a)+count(b)+count(a*b)<<endl;
        }
    }
    return 0;
}

by Prince0618 @ 2024-10-05 23:53:58

第36行偏了，不用管。

by liuhaoyan0323 @ 2024-10-06 02:25:01

@Prince0618
还好吧就是纯模拟，你是直接读入的时候做，有点麻烦，代码帮你改好了，主要在于前导零+题意理解的问题，代码如下：

#include<bits/stdc++.h>
#define int long long
using namespace std;
int T,a,b;
char c,tmp;
bool bl;
inline int read(int &num){
    int x=0,f=1,cnt=0;
    char ch=getchar();
    while(ch>'9'||ch<'0'){
        f=(ch=='-')?-1:1;
        ch=getchar();
    }
    while(ch=='0'){
        ++cnt;
        ch=getchar();
    }
    while(ch>='0'&&ch<='9'){
        x=(x<<3)+(x<<1)+(ch^48);
        ch=getchar();
    }
    num=x*f;
    return cnt;
}
inline int fpow(int a,int b){
    int ans=1;
    while(b){
        if(b&1)ans*=a;
        b>>=1;
        a*=a;
    } 
    return ans;
}
inline int count(int a){
    int ans=0; 
    if(a==0) return ans+1;
    while(a!=0){
        a/=10;
        ans+=1;
    }
    return ans;
}
inline void solve(char c){
    if(c=='a'){
        printf("%lld+%lld=%lld\n",a,b,a+b);
        printf("%lld\n",2+count(a)+count(b)+count(a+b));
    }else if(c=='b'){
        printf("%lld-%lld=%lld\n",a,b,a-b);
        if(a-b<0){
            printf("%lld\n",3+count(a)+count(b)+count(a-b));
        }else{
            printf("%lld\n",2+count(a)+count(b)+count(a-b));
        }
    }else if(c=='c'){
        printf("%lld*%lld=%lld\n",a,b,a*b);
        printf("%lld\n",2+count(a)+count(b)+count(a*b));
    }
}
signed main(){
    read(T);
    while(T--){
        bl=true;
        c=getchar();
        if(c>='a'&&c<='c'){
            read(a);
            read(b);
            tmp=c;
        }
        if(c!='a'&&c!='b'&&c!='c'){
            int x=read(a);
            read(b);
            a+=(c-'0')*fpow(10,count(a)+x);
            solve(tmp);
        }else{
            solve(c);
        }
    }
    return 0;
}

by liuhaoyan0323 @ 2024-10-06 02:26:06

@Prince0618
求关注。

by Prince0618 @ 2024-10-09 21:26:45

@liuhaoyan0323 好的，谢谢dalao. 已关注。

by Prince0618 @ 2024-10-09 21:27:49

@liuhaoyan0323 求关注（没粉丝的555...）