Submission #714800

#	Time	Username	Problem	Language	Result	Execution time	Memory
714800		Ferid20072020	Stranded Far From Home (BOI22_island)	C++14	10 / 100	1080 ms	34056 KiB

island

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx,avx2,fma")
 
#include <bits/stdc++.h>
 
using namespace std;
 
#define ll          long long 
#define ull         unsigned long long 
#define ld          long double 
#define ui          unsigned int 
#define f           first
#define s           second
#define ins         insert
#define pb          push_back
#define mp          make_pair
#define ln          '\n'
#define int         ll
#define pii         pair<int , int> 
#define INF         LLONG_MAX
#define vv(a)       vector<a>
#define pp(a, b)    pair<a, b>
#define pq(a)       priority_queue<a>
#define qq(a)       queue<a>
#define ss(a)       set<a>
#define mss(a)      multiset<a>
#define mm(a, b)    map<a, b>
#define mmm(a , b)  multimap<a , b>
#define sz(x)       (x).size()
#define all(x)      (x).begin() , (x).end()
#define fastio                    \
    ios_base::sync_with_stdio(0); \
    cin.tie(0);                   \
    cout.tie(0);
 
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

const int MAX = 2e5 + 3;
int n , m;
int tot[MAX];
vv(vv(int)) g(MAX);
vv(vv(pii)) g1(MAX);
vv(int) color(MAX);
vv(int) level(MAX);
vv(int) pref(MAX);
vv(int) parent(MAX);
int cnt = 0 , total = 0;

void init(){
    cnt = 1;
    total = 0;
    for(int i=1 ; i<MAX ; i++){
        color[i] = 0;
    }
}
 
void DFS(int src){
    //cout << src << ln;
    color[src] = 1;
    for(auto to : g1[src]){
        if(color[to.s] == 0 && to.f <= total){
            cnt++;
            total += to.f;
            DFS(to.s);
        }
    }
}

void DFS1(int src , int lvl){
    level[src] = lvl;
    for(auto to : g[src]){
        if(to > src){
            parent[to] = src;
            DFS1(to , lvl+1);
        }
    }
}

void solve(){
    int Max = -1e9;
    cin >> n >> m;
        for(int i=1 ; i<=n ; i++){
            cin >> tot[i];
        }
        for(int i=0 ; i<m ; i++){
            int u , v;
            cin >> u >> v;
            g1[u].pb({tot[v] , v});
            g1[v].pb({tot[u] , u});
        }
        for(int i=1 ; i<=n ; i++){
            sort(all(g1[i]));
        }
        for(int i=1 ; i<=n ; i++){
            init();
            total = tot[i];
            DFS(i);
            while(cnt < n){
                int cnt1 = cnt;
                for(int j=1 ; j<=n ; j++){
                    if(color[j] == 1){
                        DFS(j);
                    }
                }
                if(cnt == cnt1){
                    break;
                }
            }
            if(cnt == n){
                cout << 1;
            }
            else{
                cout << 0;
            }
        }
    
}
 
 
signed main(){
    fastio
 
    int t = 1;
    //cin >> t;
    while(t--){
        solve();
    }
 
    return 0;
}

Compilation message (stderr)

island.cpp: In function 'void solve()':
island.cpp:81:9: warning: unused variable 'Max' [-Wunused-variable]
   81 |     int Max = -1e9;
      |         ^~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 30
• Subtask 5: 0 / 35