Nel testo fornito per il .c viene definito MAXN a 20’000 quando nel testo è 2 <= N <= 30’000, se non lo si corregge mi sbaglia gli ultimi 2 testcases
/*
* This template is valid both in C and in C++,
* so you can expand it with code from both languages.
* NOTE: it is recommended to use this even if you don't
* understand the following code.
*/
#include <stdio.h>
#include <assert.h>
// constraints
#define MAXN 20000
// input data
int N, K;
char passphrase[MAXN+10];
int main() {
// uncomment the following lines if you want to read/write from files
// freopen("input.txt", "r", stdin);
// freopen("output.txt", "w", stdout);
assert(2 == scanf("%d %d", &N, &K));
assert(1 == scanf("%s", passphrase));
// insert your code here
printf("%s\n", passphrase); // print the result
return 0;
}