C 题题解

思路：构造

参考：https://blog.nowcoder.net/n/9efb42ac11a64a5ebcf0d604115df70d

Code

#include <bits/stdc++.h>

using namespace std;

string s1,s2,s3;
int a,b,c,n;

int main(){
    cin>>a>>b>>c>>n;
    int minm=min(min(a,b),c);
    for(int i=1;i<=minm;i++) s1+='a';
    s3=s2=s1;

    for(int i=1;i<=a-minm;i++) s1+='b',s2+='b';
    for(int i=1;i<=b-minm;i++) s2+='c',s3+='c';
    for(int i=1;i<=c-minm;i++) s3+='d',s1+='d';

    if(s1.size()>n||s2.size()>n||s3.size()>n) puts("NO");
    else {
        while(s1.size()<n) s1+='x';
        while(s2.size()<n) s2+='y';
        while(s3.size()<n) s3+='z';
        cout<<s1<<endl<<s2<<endl<<s3<<endl;
    }
    return 0;
}