Submission #612594

#	Time	Username	Problem	Language	Result	Execution time	Memory
612594		MohamedAliSaidane	Toy Train (IOI17_train)	C++14	0 / 100	2077 ms	21472 KiB

train

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

    typedef long long ll;
    typedef double ld;
    typedef pair<int,int> pii;
    typedef pair<ll,ll> pll;

    typedef vector<int> vi;
    typedef vector<ll> vll;
    typedef vector<pii> vpi;
    typedef vector<pll> vpl;

    #define pb push_back
    #define popb pop_back
    #define all(x) (x).begin(),(x).end()

    #define ff first
    #define ss second



//std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v);


    const int nax = 5004;
    const int MOD = 1e9 + 7;
    int  n, m;
    vi adj[nax];
    int A[nax], C[nax];
    int vis[nax][nax];
    int dfs(int x, int dep )
    {
        if(vis[x][dep])
            return 1;
        if(dep == 0)
            return 0;
        vis[x][dep] = 1;
        int ans = -1;
        for(auto e: adj[x])
        {
            int rep;
            int nw_dep = dep - 1;
            if(C[e])
                nw_dep = n;
            if(vis[x][nw_dep])
                rep = 1;
            else
                rep = dfs(e, nw_dep);
            if(ans == -1)
                ans = rep;
            else
            {
                if(A[x])
                    if(rep == 1)
                        ans = 1;

                if(!A[x])
                    if(rep == 0)
                        ans = 0;
            }
        }
        vis[x][dep] = 0 ;
        return ans;
    }
    vi who_wins(vi a, vi r, vi u, vi v)
    {
        n = a.size();
        m = u.size();
        for(int i = 0 ; i < n; i++)
        {
            A[i] = a[i];
            C[i ] = r[i];
        }
        for(int i = 0 ; i  < m; i ++)
        {
            adj[u[i]].pb(v[i]);
        }
        vi ans(n, 0);
        for(int i = 0 ; i < n; i ++)
        {
            ans[i] = dfs(i, n);
        }
        return ans;
    }
    /*
    int main() {
	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;
}
*/

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