ceva.cpp

#include <iostream>
#include <cstring>
#include <cmath>
using namespace std;
int n, i, l;
char s[200], cuv[200];
int main() {
    //cin.getline(cuv, 200);
    strcpy(cuv, "TPQAREDSXMRYIUVE");

    strcpy(s, " ");
    strcat(s, cuv);

    l = strlen(s);
    n = sqrt(l);

    i = n;
    while(i < l-1) {
        cout << s[i];
        i += n-1;
    }
    i=1;
    while(i < l) {
        cout << s[i];
        i += n+1;
    }
    return 0;
}