func_code_string: #include <bits/stdc++.h>   using namespace std;   char str[40], ans[2][40], p[40];   int pre[40], sum[40];   int main() {     scanf( %s , str);     int L = 0, R = 0;     bool mark = true;     memset(pre, -1, sizeof(pre));     for (int i = 0; i < 27; i++) {       int a = str[i] -  A ;       sum[a]++;       if (pre[a] == -1)         pre[a] = i;       else {         L = pre[a];         R = i;         if (R - 1 == L) {           mark = false;         }       }     }     int k = 0;     for (int i = 0; i < 26; i++) {       if (sum[i] == 0 || sum[i] > 2) mark = false;       if (sum[i] == 2) k++;     }     if (k != 1 || !mark) {       printf( Impossible n );       return 0;     }     R = 26 - R;     int cnt = 0;     if (L > R) {       int o = 0;       for (int i = 26; i >= 0; i--) {         p[o++] = str[i];       }       for (int i = 0; i < 27; i++) str[i] = p[i];       swap(L, R);     }     int num = R - L;     if (num & 1) {       num = (num / 2) + 1;       int i;       for (i = num;; i++) {         if (cnt == L) break;         ans[0][i] = str[cnt++];       }       int flag = i - 1;       ans[1][i - 1] = str[cnt++];       for (; i < 13; i++) ans[0][i] = str[cnt++];       for (int i = 12; i > flag; i--) {         ans[1][i] = str[cnt++];       }       cnt++;       for (int i = flag - 1; i >= 0; i--) ans[1][i] = str[cnt++];       if (num) {         for (int i = 0; i < num; i++) ans[0][i] = str[cnt++];       }     } else {       num = num / 2;       int i;       for (i = num;; i++) {         if (cnt == L) break;         ans[0][i] = str[cnt++];       }       int flag = i;       ans[1][i] = str[cnt++];       for (; i < 13; i++) ans[0][i] = str[cnt++];       for (int i = 12; i > flag; i--) {         ans[1][i] = str[cnt++];       }       cnt++;       for (int i = flag - 1; i >= 0; i--) ans[1][i] = str[cnt++];       if (num) {         for (int i = 0; i < num; i++) ans[0][i] = str[cnt++];       }     }     if (L == 0 && R == 0) {       cnt = 0;       for (int i = 0; i < 13; i++) ans[0][i] = str[cnt++];       for (int i = 12; i >= 0; i--) ans[1][i] = str[cnt++];     }     for (int i = 0; i < 2; i++) {       for (int j = 0; j < 13; j++) printf( %c , ans[i][j]);       printf(  n );     }   }   