Submission #70881

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
70881	2018-08-23 15:12:24	aquablitz11	Toy Train (IOI17_train)	C++14	100 / 100	892 ms	15760 KiB

train

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#include <bits/stdc++.h>
#include "train.h"
using namespace std;
 
using pii = pair<int, int>;
 
const int N = 5e3+10;
vector<int> G[N], R[N];
int need[N];
bool win[N];
void dfs(int u, int r=0) {
    need[u] = 0;
    if (!r) win[u] = true;
    for (auto v : R[u]) if (--need[v] == 0)
        dfs(v, r);
}
vector<int> who_wins(vector<int> A, vector<int> C, vector<int> U, vector<int> V)
{
    int n = A.size();
    int m = U.size();
    for (int i = 0; i < m; ++i) {
        G[U[i]].push_back(V[i]);
        R[V[i]].push_back(U[i]);
    }
    while (true) {
        // find all nodes that A can force to charger
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 12 / 12
• Subtask 6: 51 / 51