Enunt eliminat la cererea autorului.

Exemplul 1:

polybius.in

1
ABCDEFGHIKLMNOPQRSTUVWXYZ 
ANAAREMERE

polybius.out

11331111421532154215

Exemplul 2:

polybius.in

2
ABCDEFGHIKLMNOPQRSTUVWXYZ 
11331111421532154215

polybius.out

ANAAREMERE

#include <bits/stdc++.h>
using namespace std;

ifstream cin("polybius.in");
ofstream cout("polybius.out");

char mat[6][6];
int cer;

int main()
{
    cin >> cer;
    char a[30];
    cin >> a;
    int k = 0;
    for(int i = 1; i <= 5; ++i)
        for(int j = 1 ; j <= 5; ++j){
            while(a[k] == ' ')
                k++;
            mat[i][j] = a[k];
            k++;
        }
    cin.get();
    int X[30];
    if(cer == 2){
        char a, b;
        while(cin >> a >> b)
            cout << mat[a-'0'][b-'0'];
    }
    else{
        char ch;
        for(int i = 1 ; i <= 5; ++i)
            for(int j = 1 ; j <= 5; ++j)
                X[mat[i][j]-'A'] = i * 10 + j;
        while(cin >> ch)
                cout << X[ch-'A'];
    }
    return 0;
}