Submission #793406

#	Time	Username	Problem	Language	Result	Execution time	Memory
793406		rainboy	RPS string (innopolis2021_final_C)	C11	100 / 100	15 ms	2240 KiB

Main

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

#define N	500000

int main() {
	int t;

	scanf("%d", &t);
	while (t--) {
		static char cc[N + 1], win[N + 1];
		int d, n, i, u, v, w, c;

		scanf("%d%s", &d, cc), n = strlen(cc);
		for (i = 0; i < n; i++)
			if (cc[i] == 'r')
				cc[i] = 0;
			else if (cc[i] == 'p')
				cc[i] = 1;
			else
				cc[i] = 2;
		memset(win, '1', n * sizeof *win), win[n] = 0;
		if (d == 1) {
			u = 0;
			for (i = 0; i < n; i++) {
				c = cc[i];
				if ((u & 1 << (c + 1) % 3) != 0 && (u & 1 << (c + 2) % 3) == 0)
					win[i] = '0';
				u |= 1 << c;
			}
			u = 0;
			for (i = n - 1; i >= 0; i--) {
				c = cc[i];
				if ((u & 1 << (c + 1) % 3) != 0 && (u & 1 << (c + 2) % 3) == 0)
					win[i] = '0';
				u |= 1 << c;
			}
		} else {
			u = 0, v = 0, w = 0;
			for (i = 0; i < n; i++) {
				c = cc[i];
				if ((u & 1 << c) == 0) {
					if ((u & 1 << (c + 1) % 3) != 0 && (u & 1 << (c + 2) % 3) == 0)
						win[i] = '0';
				} else {
					if ((u & 1 << (c + 1) % 3) == 0)
						win[i] = '0';
					else if (cc[i - 1] != (c + 2) % 3 && (w & 1 << (c + 2) % 3) == 0)
						win[i] = '0';
				}
				if ((v & 1 << (c + 1) % 3) != 0)
					w |= 1 << (c + 1) % 3;
				if (i == 0 || (u & 1 << (c + 2) % 3) != 0)
					v |= 1 << c;
				u |= 1 << c;
			}
			u = 0, v = 0, w = 0;
			for (i = n - 1; i >= 0; i--) {
				c = cc[i];
				if ((u & 1 << c) == 0) {
					if ((u & 1 << (c + 1) % 3) != 0 && (u & 1 << (c + 2) % 3) == 0)
						win[i] = '0';
				} else {
					if ((u & 1 << (c + 1) % 3) == 0)
						win[i] = '0';
					else if (cc[i + 1] != (c + 2) % 3 && (w & 1 << (c + 2) % 3) == 0)
						win[i] = '0';
				}
				if ((v & 1 << (c + 1) % 3) != 0)
					w |= 1 << (c + 1) % 3;
				if (i == n - 1 || (u & 1 << (c + 2) % 3) != 0)
					v |= 1 << c;
				u |= 1 << c;
			}
		}
		printf("%s\n", win);
	}
	return 0;
}

Compilation message (stderr)

Main.c: In function 'main':
Main.c:9:2: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  scanf("%d", &t);
      |  ^~~~~~~~~~~~~~~
Main.c:14:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |   scanf("%d%s", &d, cc), n = strlen(cc);
      |   ^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 9 / 9
• Subtask 3: 10 / 10
• Subtask 4: 11 / 11
• Subtask 5: 7 / 7
• Subtask 6: 13 / 13
• Subtask 7: 10 / 10
• Subtask 8: 33 / 33