Submission #1121683

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121683		vjudge1	Stranded Far From Home (BOI22_island)	C++17	0 / 100	247 ms	764 KiB

island

#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <algorithm>
#include <stdio.h>
#include <fstream>
#include <unordered_map>
using namespace std;
#define ll long long
#define ff first
#define ss second
#define pb push_back 
#define pf push_front
#define UseOFF ios_base::sync_with_stdio(0);cin.tie(0), cout.tie(0);
#define sz size
#define ins insert
#define new junkedseduneon
#define prev usfdjik
const ll N = 2222 + 111;
ll a[N];
vector <ll> v[N];
bool used[N];
void solve() {
	ll n, m;
	cin >> n >> m;
	for(int i = 1; i <= n; i++) {
		cin >> a[i];
	}
	for(int i = 1; i <= m; i++) {
		ll x, y;
		cin >> x >> y;
		v[x].pb(y);
		v[y].pb(x);
	}
	for(int i = 1; i <= n; i++) {
		multiset < pair <ll, ll> > st;
		st.ins({a[i], i});
		//cout << x.ff << " " << x.ss << '\n';
		ll cur = 0;
		bool bb = 0;
		for(int j = 1; j <= n; j++) used[j] = 0;
		while(st.sz() > 0) {
		    vector <ll> g;
			pair <ll, ll> x = *st.begin();
			if(cur < x.ff && x.ss != i) {
			    cout << '0';
			    bb = 1;
			    break;
			}
			cur += x.ff;
			for(auto to : v[x.ss]) {
			    if(used[to]) continue;
			    //cout << i << " " << to << " " << x.ss << endl;
				st.ins({a[to], to});
				used[to] = 1;
			}
			st.erase(x);
		}
		if(st.sz() == 0) {
		    cout << '1';
		}
	}
}
signed main()
{
	UseOFF
    ll ttt = 1;
    //cin >> ttt;
    while(ttt--)
    {
        solve();
    }
}

Compilation message (stderr)

island.cpp: In function 'void solve()':
island.cpp:59:8: warning: variable 'bb' set but not used [-Wunused-but-set-variable]
   59 |   bool bb = 0;
      |        ^~

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