求助！50分！

wxr0108 @ 2022-09-19 22:24:39

#include<bits/stdc++.h>
using namespace std;
int main(){
    int ans=1,cnt=0;
    char s[3000];
    cin>>s;
    int len=strlen(s);
    for(int i=0;i<len-1;i++){
        if(s[i]!='-'){
            int t=s[i]-'0';
            cnt+=(ans*t);
            ans++;
        }
    }
    //cout<<ans<<endl;
    int w=cnt%11;
    if((s[len-1]-'0')==w){
        cout<<"Right\n";
        return 0;
    }else{
        for(int i=0;i<len-1;i++) cout<<s[i];    
    }
    cout<<w<<endl;
    return 0;
} 

by zhangjingxing2012 @ 2022-09-21 17:46:56

奉上O（1）代码

#include<bits/stdc++.h>
using namespace std;
int main()
{
    char a,b,c,d,e,f,g,h,i,j;
    int check;
    scanf("%c-%c%c%c-%c%c%c%c%c-%c",&a,&b,&c,&d,&e,&f,&g,&h,&i,&j);
    check=(a-'0')*1+(b-'0')*2+(c-'0')*3+(d-'0')*4+(e-'0')*5
         +(f-'0')*6+(g-'0')*7+(h-'0')*8+(i-'0')*9;
    check%=11;
    if(j=='X'&&check==10||check==j-'0') printf("Right");
    else printf("%c-%c%c%c-%c%c%c%c%c-%c",a,b,c,d,e,f,g,h,i,check==10?'X':check+'0');
}