Submission #136492

#	Time	Username	Problem	Language	Result	Execution time	Memory
136492		evpipis	Toy Train (IOI17_train)	C++11	0 / 100	9 ms	1016 KiB

train

//#define TEST

#ifndef TEST
#include "train.h"
#endif // TEST

#include <bits/stdc++.h>
using namespace std;

const int len = 5005;
int self[len], nex[len];

vector<int> who_wins(vector<int> own, vector<int> spe, vector<int> A, vector<int> B) {
	int n = own.size(), m = A.size();
	for (int i = 0; i < m; i++){
        int a = A[i], b = B[i];
        if (a == b)
            self[a] = 1;
        else
            nex[a] = 1;
	}

	vector<int> dp(n);
	for (int i = n-1; i > 0; i--){
        if (own[i] == 1){
            dp[i] = 0;
            if (self[i] && spe[i])
                dp[i] = 1;
            else if (nex[i])
                dp[i] = dp[i+1];
        }
        else{
            dp[i] = 1;
            if (self[i] && !spe[i])
                dp[i] = 0;
            else if (nex[i])
                dp[i] = dp[i+1];
        }
	}

	return dp;
}

#ifdef TEST
int main() {
    freopen("in.txt", "r", stdin);
	int n, m;
	assert(2 == scanf("%d %d", &n, &m));

	vector<int> a(n), r(n), u(m), v(m);

	for(int i = 0; i < n; i++)
		assert(1 == scanf("%d", &a[i]));

	for(int i = 0; i < n; i++)
		assert(1 == scanf("%d", &r[i]));

	for(int i = 0; i < m; i++)
		assert(2 == scanf("%d %d", &u[i], &v[i]));

	vector<int> res = who_wins(a, r, u, v);

	for(int i = 0; i < (int)res.size(); i++)
		printf(i ? " %d" : "%d", res[i]);
	printf("\n");

	return 0;
}
#endif

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