Submission #584087

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
584087	2022-06-26T19:06:19 Z	yanndev	Toy Train (IOI17_train)	C++17	0 / 100	6 ms	1012 KB

train

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

const int MX = 5042;
vector<int> graph[MX];

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
    int n, m;
    n = (int)a.size();
    //m = (int)u.size();

    for (int i = 0; i < MX; i++)
        graph[i].clear();

    vector<int> ans (n);
    bool isChain = true;

    for (int i = 0; i < (int)u.size(); i++) {
        graph[u[i]].push_back(v[i]);
        if (!(u[i] == v[i] || v[i] == u[i] + 1))
            isChain = false;
    }

    isChain = true;

    if (isChain) {
        for (int i = n - 1; i >= 0; i--) {
            bool hasSelf = false;
            bool isOk = false;

            for (auto& x: graph[i]) {
                if (x == i) {
                    hasSelf = true;
                } else if (x == i + 1) {
                    isOk |= (bool)ans[x];
                }
            }

            if (hasSelf) {
                if (a[i] == 1) {
                    if (r[i] == 1)
                        isOk = true;
                } else {
                    if (r[i] == 0)
                        isOk = false;
                }
            }

            ans[i] = (int)isOk;
        }

        return ans;
    }

    return ans;
}

Compilation message

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:8:12: warning: unused variable 'm' [-Wunused-variable]
    8 |     int n, m;
      |            ^

Subtask #1
0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	768 KB	Output is correct
2	Incorrect	6 ms	724 KB	3rd lines differ - on the 4997th token, expected: '1', found: '0'
3	Halted	0 ms	0 KB	-

Subtask #2
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	1 ms	340 KB	3rd lines differ - on the 2nd token, expected: '1', found: '0'
2	Halted	0 ms	0 KB	-

Subtask #3
0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	996 KB	Output is correct
2	Correct	6 ms	980 KB	Output is correct
3	Correct	5 ms	996 KB	Output is correct
4	Incorrect	6 ms	980 KB	3rd lines differ - on the 1st token, expected: '1', found: '0'
5	Halted	0 ms	0 KB	-