Submission #22459

#	Time	Username	Problem	Language	Result	Execution time	Memory
22459		크리님 제가 귀여우면 됬지 뭘 더 원하세요 진짜 (#40)	Joyful KMP (KRIII5_JK)	C++14	0 / 7	0 ms	2028 KiB

JK

#include <stdio.h>
#include <stack>
#include <algorithm>
#include <string.h>
#include <vector>
#include <iostream>
#include <string>
#include <queue>
#define sz 100
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pii;

bool check[30];
ll com[30][30],num[30];
vector<ll> vec;
void dfs(ll l,ll r,ll k) {
	if (r == -1) return;
	for (ll i = 0; i < 26; i++) {
		if (check[i] == true) continue;
		bool flag = false;
		ll num = com[l][r];
		for (ll j = 1; j <= r; j++) {
			num *= j;
			if (num >= k) {
				flag = true;
				break;
			}
		}
		if (flag || k <= num) {
			check[i] = true;
			vec.push_back(i);
			dfs(l - 1, r - 1, k);
			return;
		}
		k -= num;
	}
}
ll mod = 1000000007;
int main() {
	memset(num, -1, sizeof(num));
	string str; cin >> str;
	ll cnt = 0;
	for (ll i = 0; i < str.size(); i++) 
		if (num[str[i]-'a'] == -1) 
			num[str[i]-'a'] = cnt++;
	ll k; scanf("%lld", &k);
	
	com[0][0] = 1;
	for (ll i = 1; i < 30; i++) {
		com[i][0] = com[i][i] = 1;
		for (ll j = 1; j < i; j++) 
			com[i][j] = com[i - 1][j - 1] + com[i - 1][j];
	}
	bool flag = false;
	ll ans = com[26][cnt];
	ll ans2 = com[26][cnt];
	for (ll i = 1; i <= cnt; i++) {
		ans *= i;
		ans2 *= i;
		if (ans >= k) 
			flag = true;
		ans2 %= mod;
	}
	printf("%lld\n", ans2);
	if (!flag) {
		printf("OVER\n"); return 0;
	}
	dfs(25, cnt - 1, k);
	for (ll i = 0; i < str.size(); i++) {
		printf("%c", vec[num[str[i] - 'a']] + 'a');
	}

}

Compilation message (stderr)

JK.cpp: In function 'int main()':
JK.cpp:45:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (ll i = 0; i < str.size(); i++) 
                   ^
JK.cpp:71:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (ll i = 0; i < str.size(); i++) {
                   ^
JK.cpp:72:44: warning: format '%c' expects argument of type 'int', but argument 2 has type '__gnu_cxx::__alloc_traits<std::allocator<long long int> >::value_type {aka long long int}' [-Wformat=]
   printf("%c", vec[num[str[i] - 'a']] + 'a');
                                            ^
JK.cpp:48:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  ll k; scanf("%lld", &k);
                         ^

• Subtask 1: 0 / 1