Submission #424924

#	Time	Username	Problem	Language	Result	Execution time	Memory
424924		rainboy	Toy Train (IOI17_train)	C++17	5 / 100	47 ms	924 KiB

train

#include "train.h"
#include <string.h>

using namespace std;

const int N = 5000, M = 20000;

typedef vector<int> vi;

char self[N], right[N];

vi who_wins(vi aa, vi rr, vi uu, vi vv) {
	int n = aa.size(), m = uu.size(), h, i, j;
	vi ans(n);

	memset(self, 0, n * sizeof *self), memset(right, 0, n * sizeof *right);
	for (h = 0; h < m; h++)
		if (vv[h] == uu[h])
			self[uu[h]] = 1;
		else
			right[uu[h]] = 1;
	for (i = 0; i < n; i++) {
		ans[i] = 0;
		for (j = i; j < n; j++)
			if (aa[j]) {
				if (rr[j]) {
					if (self[j]) {
						ans[i] = 1;
						break;
					}
				} else {
					if (!right[j]) {
						ans[i] = 0;
						break;
					}
				}
			} else {
				if (rr[j]) {
					if (!right[j]) {
						ans[i] = 1;
						break;
					}
				} else {
					if (self[j]) {
						ans[i] = 0;
						break;
					}
				}
			}
	}
	return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 0 / 11
• Subtask 5: 0 / 12
• Subtask 6: 0 / 51