Submission #441579

#	Time	Username	Problem	Language	Result	Execution time	Memory
441579		rainboy	Type Printer (IOI08_printer)	C11	10 / 100	58 ms	17860 KiB

printer

#include <stdio.h>
#include <string.h>

#define N	25000
#define L	20
#define N_	(2 + N * L)
#define A	26

int max(int a, int b) { return a > b ? a : b; }

int tt[N_][A], dd[N_]; char word[N_];

void dfs1(int i) {
	int a;

	for (a = 0; a < A; a++) {
		int j = tt[i][a];

		if (j) {
			dfs1(j);
			dd[i] = max(dd[i], dd[j] + 1);
		}
	}
}

void dfs2(int i) {
	int a, a_;

	if (word[i])
		printf("P\n");
	a_ = -1;
	for (a = 0; a < A; a++) {
		int j = tt[i][a];

		if (j && dd[i] == dd[j] + 1) {
			a_ = a;
			break;
		}
	}
	for (a = 0; a < A; a++) {
		int j = tt[i][a];

		if (j && a != a_) {
			printf("%c\n", a + 'a');
			dfs2(j);
			printf("-\n");
		}
	}
	if (a_ != -1) {
		printf("%c\n", a_ + 'a');
		dfs2(tt[i][a_]);
	}
}

int main() {
	int n, n_, i;

	scanf("%d", &n);
	n_ = 2;
	for (i = 0; i < n; i++) {
		static char cc[L + 1];
		int l, h, t;

		scanf("%s", cc), l = strlen(cc);
		for (h = 0, t = 1; h < l; h++) {
			int a = cc[h] - 'a';

			if (!tt[t][a])
				tt[t][a] = n_++;
			t = tt[t][a];
		}
		word[t] = 1;
	}
	dfs1(1);
	printf("%d\n", n + (n_ - 2) * 2 - dd[1]);
	dfs2(1);
	return 0;
}

Compilation message (stderr)

printer.c: In function 'main':
printer.c:58:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   58 |  scanf("%d", &n);
      |  ^~~~~~~~~~~~~~~
printer.c:64:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |   scanf("%s", cc), l = strlen(cc);
      |   ^~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10