Submission #434165

#	Time	Username	Problem	Language	Result	Execution time	Memory
434165		Odavey	Game (IOI14_game)	C++14	0 / 100	5 ms	9164 KiB

game

//
// ~oisín~ C++ Template
//

#include                <bits/stdc++.h>
#define MX_N            5001
#define mp              make_pair
#define mod7            1000000007
#define modpi           314159
#define PI              3.141592653589793238
#define pb              push_back
#define FastIO          ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define All(a)          a.begin(),a.end()
#define fi              first
#define se              second
#define ll              long long int
#define ull             unsigned long long int

int kx[8]  =            {+2, +2, -2, -2, +1, +1, -1, -1};
int ky[8]  =            {+1, -1, +1, -1, +2, -2, +2, -2};
int d9x[9] =            {+1, +1, +1, +0, +0, +0, -1, -1, -1};
int d9y[9] =            {+1, +0, -1, +1, +0, -1, +1, +0, -1};
int dx4[4] =            {+0, +0, +1, -1};
int dy4[4] =            {+1, -1, +0, +0};

ll gcd(ull a, ull b){
    return (a==0)?b:gcd(b%a,a);
}

ll lcm(ull a, ull b){
    return a*(b/gcd(a,b));
}

const long long INF = 1e18;

using namespace std;

int V;

int AM[1501][1501];
int p[1501];
set<int> valid_edges[1501];

void initialize(int n){
    memset(AM, -1, sizeof(AM));
    V = n;
    for(int u=0;u<V;++u){
        for(int v=0;v<V;++v){
            if(v != u){
                valid_edges[u].insert(v);
            }
        }
    }
    p[0] = -1;
    for(int u=1;u<V;++u){
        p[u] = 0;
        valid_edges[u].erase(0);
    }
    return;
}

int hasEdge(int u, int v){
    if(AM[u][v] != -1){
        return AM[u][v];
    }
    if(p[v] == u){
        swap(u, v);
    }
    if(p[u] == v){
        if(valid_edges[u].size() == 0){
            return AM[u][v] = 1;
        }else{
            int w = *(valid_edges[u].begin());
            valid_edges[w].erase(u);
            valid_edges[u].erase(w);
            p[u] = w;
            return AM[u][v] = 0;
        }
    }else{
        valid_edges[u].erase(v);
        valid_edges[v].erase(u);
        return AM[u][v] = 0;
    }
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 27
• Subtask 3: 0 / 58