Submission #53440

#	Time	Username	Problem	Language	Result	Execution time	Memory
53440		ainta	Toy Train (IOI17_train)	C++17	11 / 100	1898 ms	1136 KiB

train

#include "train.h"
#include<cstdio>
#include<algorithm>
using namespace std;

int n, m, D[5010], TD[5010];

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
	n = a.size();
	m = u.size();
	int i, j, k;
	for (i = 0; i < n; i++) {
		if (r[i] == 1)D[i] = 0;
		else D[i] = -1e9;
		if (a[i] == 1)TD[i] = -1e9;
		else TD[i] = 1e9;
	}
	for (i = 0; i <=n+n; i++) {
		for (j = 0; j < m; j++) {
			int t = D[v[j]] + 1;
			if (r[u[j]])t = max(t, 0);
			if (a[u[j]] == 1) {
				TD[u[j]] = max(TD[u[j]], t);
			}
			else {
				TD[u[j]] = min(TD[u[j]], t);
			}
		}
		for (j = 0; j < n; j++) {
			D[j] = TD[j];
			if (a[j] == 1)TD[j] = -1e9;
			else TD[j] = 1e9;
		}
	}
	vector<int>res(n);
	for (j = 0; j < n; j++) {
		if (D[j] >= n)res[j] = 1;
		else res[j] = 0;
	}
	return res;
}

Compilation message (stderr)

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:11:12: warning: unused variable 'k' [-Wunused-variable]
  int i, j, k;
            ^

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