#include <iostream>
typedef unsigned long long LL;
bool is_prime(LL x) {
if (x == 1) return false;
for (LL i = 3; i * i <= x; i++) {
if (x % i == 0) return false;
}
return true;
}
int main() {
LL n; //ab
LL a;
LL b;
bool skip = false;
scanf("%llu", &n);
a = n / 10;
b = n % 10;
LL last_digit = a % 10;
if (b % 2 == 0 || b == 5) {
if (is_prime(a)) {
printf("TAK");
return 0;
}
printf("NIE");
return 0;
}
if (is_prime(a) && is_prime(b)) {
printf("TAK");
return 0;
}
if (last_digit == 0) skip = true;
LL exp = 10;
while (a != 0) {
if (skip) {
if (last_digit != 0) skip = false;
a /= 10;
b += last_digit * exp;
last_digit = a % 10;
exp *= 10;
continue;
}
if (is_prime(a) && is_prime(b)) {
printf("TAK");
return 0;
}
if (last_digit == 0) skip = true;
a /= 10;
b += last_digit * exp;
last_digit = a % 10;
exp *= 10;
}
printf("NIE");
return 0;
}
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | #include <iostream> typedef unsigned long long LL; bool is_prime(LL x) { if (x == 1) return false; for (LL i = 3; i * i <= x; i++) { if (x % i == 0) return false; } return true; } int main() { LL n; //ab LL a; LL b; bool skip = false; scanf("%llu", &n); a = n / 10; b = n % 10; LL last_digit = a % 10; if (b % 2 == 0 || b == 5) { if (is_prime(a)) { printf("TAK"); return 0; } printf("NIE"); return 0; } if (is_prime(a) && is_prime(b)) { printf("TAK"); return 0; } if (last_digit == 0) skip = true; LL exp = 10; while (a != 0) { if (skip) { if (last_digit != 0) skip = false; a /= 10; b += last_digit * exp; last_digit = a % 10; exp *= 10; continue; } if (is_prime(a) && is_prime(b)) { printf("TAK"); return 0; } if (last_digit == 0) skip = true; a /= 10; b += last_digit * exp; last_digit = a % 10; exp *= 10; } printf("NIE"); return 0; } |
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