Submission #3842

#	Time	Username	Problem	Language	Result	Execution time	Memory
3842		shinhj88	Make superpalindrome! (kriii1_M)	C++98	0 / 1	200 ms	1284 KiB

M

#include <stdio.h>
#include <string.h>
char S[100010],P[100010];
int Ck[20];
int N,M,F;
void Copying(int n)
{
	int w;
	w=(n%2==1)?n/2+1:n/2;
	if(n==1)return;
	else {
		Copying(n/2);
		for(int i=0;i<n/2;i++)P[w+i]=P[i];
	}
}
void Palindrome(int n)
{
	int i;
	if(F==1)return;
	if(n>M){
		Copying(N);
		if(strcmp(P,S)>0){
			F=1;
			printf("%s\n",P);
		}
		return;
	}
	for(i=0;i<26;i++){
		P[Ck[n]/2]='a'+i;
		Palindrome(n+1);
	}
}
int main()
{
	int i,n;
	scanf("%s",S);
	n=N=strlen(S);
	while(n>1){
		if(n%2==1)Ck[++M]=n;
		n/=2;
	}
	P[0]=S[0];
	Palindrome(1);
	if(F==0){
		P[0]=S[0]+1;
		Palindrome(1);
	}
	return 0;
}

• Subtask 1: 0 / 1