PAT/PATBasic/1058.c

#include <stdio.h>

typedef struct prob{
	int score;
	int answer; /* bitwise storage for at most 5 options */
	int wrong;
} Prob;

/* read 'count option1 ...' format */
int readanswer()
{
	char c;
	int count, answer = 0;
	scanf("%d", &count);
	for (int k = 0; k < count; k++) {
		while ((c = getchar()) == ' ') ;
		answer |= 1 << (c - 'a');
	}
	return answer;
}

int main()
{
	int N, M, max = 0, useless;
	Prob probs[100];

	/* read the answers for each problem */
	scanf("%d %d", &N, &M);
	for (int i = 0; i < M; i++) {
		scanf("%d %d", &probs[i].score, &useless);
		probs[i].wrong = 0;
		probs[i].answer = readanswer();
	}

	/* read every student's answer */
	for (int i = 0; i < N; i++) {
		int score = 0;
		for (int j = 0; j < M; j++) {
			/* read answer for one problem */
			while (getchar() != '(');
			if (readanswer() == probs[j].answer) /* If it is right */
				score += probs[j].score;
			else if (max < ++probs[j].wrong)  /* If most students got it wrong */
				max = probs[j].wrong;
			while (getchar() != ')');
		}
		printf("%d\n", score);
	}

	if (max == 0) {
		printf("Too simple");
	} else {
		printf("%d", max);
		for (int i = 0; i < M; i++)
			if (probs[i].wrong == max)
				printf(" %d", i + 1);
	}

	return 0;
}