Untitled

#include<stdio.h>
int main(){
    int a[1000] ={}, n = 1, b[1000] = {}, c[1000] = {};
    for(int i = 0; i < 1000; i++){
        a[i] = -1;
    }
    while(scanf("%d", &a[n]) != EOF) n++;
    for(int i = 1; i < n; i++){
        b[i] = 1;
        int length = 1;
        for(int j = 1; (i-j) > 0 && a[i-j] == a[i+j]; j++){
            length += 2;
            b[i-((length-1)/2)] = length;
        }
        if(a[i] == a[i+1]){
            int length = 0;
            for(int j = 0; (i-j) > 0 && a[i-j] == a[i+1+j]; j++){
                length += 2;
                if(b[i-((length-2)/2)] < length)
                    b[i-((length-2)/2)] = length;
            }
        }
    }
    int max = 0, m = -1;
    for(int i = 1; i < n; i++){
        c[i] = b[i] + b[i+b[i]];
        if(b[i+b[i]] == 0)
            c[i-1] = c[i]+1;
    }
    for(int i = 1; i < n; i++){
        if(c[i] >= max){
            max = c[i];
            m = i;
        }
    }
    for(int i = 0; i < max-1; i++){
        printf("%d ", a[m+i]);
    }
    printf("%d\n", a[m+max-1]);
    return 0;
}