oj.uz

Submission #654210

# Submission time Handle Problem Language Result Execution time Memory
654210 2022-10-30T11:06:46 Z baojiaopisu Stranded Far From Home (BOI22_island) C++14
100 / 100
 369 ms 36104 KB 
#include<bits/stdc++.h>

using namespace std;

using ll = long long;
using ld = long double;
using ull = unsigned long long;

using pii = pair<int, int>;
using pll = pair<ll, ll>;
using pld = pair<ld, ld>;

#define fi first
#define se second
#define pb push_back
#define pf push_front
#define mp make_pair
#define ins insert
#define btpc __builtin_popcount
#define btclz __builtin_clz

#define sz(x) (int)(x.size());
#define all(x) x.begin(), x.end()
#define debug(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int d4x[4] = {1, 0, -1, 0}; int d4y[4] = {0, 1, 0, -1};
int d8x[8] = {0, 1, 1, 1, 0, -1, -1, -1};
int d8y[8] = {1, 1, 0, -1, -1, -1, 0, 1};

template<class X, class Y>
    bool minimize(X &x, const Y &y) {
        if (x > y)
        {
            x = y;
            return true;
        }
        return false;
    }
template<class X, class Y>
    bool maximize(X &x, const Y &y) {
        if (x < y)
        {
            x = y;
            return true;
        }
        return false;
    }

const int MOD = 1e9 + 7; //998244353

template<class X, class Y>
	void add(X &x, const Y &y) {
		x = (x + y);
		if(x >= MOD) x -= MOD;
	}

template<class X, class Y> 
	void sub(X &x, const Y &y) {
		x = (x - y);
		if(x < 0) x += MOD;
	}

/* Author : Le Ngoc Bao Anh, 12A5, LQD High School for Gifted Student*/

const ll INF = 1e9;
const int N = 2e5 + 10;

int par[N], id[N], ans[N];
ll sum[N], a[N];
vector<int> g[N], son[N];

int find_par(int u) {
	if(par[u] < 0) return u;
	par[u] = find_par(par[u]);
	return par[u];
}

void merge(int u, int v) {
	u = find_par(u), v = find_par(v);
	if(u == v) return;
	if(par[u] > par[v]) swap(u, v);
	par[u] += par[v];
	sum[u] += sum[v];
	par[v] = u;
	for(auto x : son[v]) son[u].pb(x);
}

bool cmp(int x, int y) {
	return a[x] < a[y];
}

void solve() {
	int n, m; cin >> n >> m;
	for(int i = 1; i <= n; i++) cin >> a[i];

	for(int i = 1; i <= m; i++) {
		int u, v; cin >> u >> v;
		g[u].pb(v);
		g[v].pb(u);
	}

	for(int i = 1; i <= n; i++) id[i] = i, sum[i] = a[i], son[i].pb(i), par[i] = -1;
	sort(id + 1, id + 1 + n, cmp);

	for(int i = 1; i <= n; i++) {
		int u = id[i];
		for(auto v : g[u]) {
			if(a[v] < a[u]) {
				v = find_par(v);
				if(sum[v] < a[u]) {
					for(auto x : son[v]) ans[x] = 1;
					son[v].clear();
				}
			}

			if(a[v] <= a[u]) {
				merge(u, v);
			}
		}
	}

	for(int i = 1; i <= n; i++) cout << (ans[i] ^ 1);
}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int tc = 1, ddd = 0;
    // cin >> tc;
    while(tc--) {
        //ddd++;
        //cout << "Case #" << ddd << ": ";
        solve();
    }
}

Compilation message

island.cpp: In function 'int main()':
island.cpp:131:17: warning: unused variable 'ddd' [-Wunused-variable]
  131 |     int tc = 1, ddd = 0;
      |                 ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 6 ms 9684 KB Output is correct
4 Correct 7 ms 9892 KB Output is correct
5 Correct 8 ms 9940 KB Output is correct
6 Correct 6 ms 9896 KB Output is correct
7 Correct 7 ms 9872 KB Output is correct
8 Correct 7 ms 9812 KB Output is correct
9 Correct 9 ms 9940 KB Output is correct
10 Correct 9 ms 9940 KB Output is correct
11 Correct 8 ms 9996 KB Output is correct
12 Correct 7 ms 10000 KB Output is correct
13 Correct 8 ms 9868 KB Output is correct
14 Correct 7 ms 9940 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 9684 KB Output is correct
2 Correct 9 ms 9732 KB Output is correct
3 Correct 255 ms 32528 KB Output is correct
4 Correct 230 ms 34724 KB Output is correct
5 Correct 269 ms 34284 KB Output is correct
6 Correct 320 ms 35128 KB Output is correct
7 Correct 330 ms 35024 KB Output is correct
8 Correct 272 ms 34184 KB Output is correct
9 Correct 183 ms 36000 KB Output is correct
10 Correct 161 ms 32220 KB Output is correct
11 Correct 152 ms 32556 KB Output is correct
12 Correct 243 ms 32584 KB Output is correct
13 Correct 183 ms 35272 KB Output is correct
14 Correct 170 ms 34856 KB Output is correct
15 Correct 172 ms 32504 KB Output is correct
16 Correct 103 ms 31648 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 268 ms 35152 KB Output is correct
3 Correct 247 ms 35976 KB Output is correct
4 Correct 270 ms 36000 KB Output is correct
5 Correct 160 ms 35004 KB Output is correct
6 Correct 263 ms 36104 KB Output is correct
7 Correct 220 ms 32580 KB Output is correct
8 Correct 215 ms 32576 KB Output is correct
9 Correct 102 ms 31684 KB Output is correct
10 Correct 195 ms 33628 KB Output is correct
11 Correct 208 ms 34200 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 295 ms 33076 KB Output is correct
3 Correct 291 ms 34344 KB Output is correct
4 Correct 289 ms 35164 KB Output is correct
5 Correct 337 ms 35288 KB Output is correct
6 Correct 241 ms 33000 KB Output is correct
7 Correct 149 ms 33652 KB Output is correct
8 Correct 127 ms 32932 KB Output is correct
9 Correct 159 ms 22892 KB Output is correct
10 Correct 247 ms 35200 KB Output is correct
11 Correct 204 ms 34380 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 6 ms 9684 KB Output is correct
3 Correct 6 ms 9684 KB Output is correct
4 Correct 7 ms 9892 KB Output is correct
5 Correct 8 ms 9940 KB Output is correct
6 Correct 6 ms 9896 KB Output is correct
7 Correct 7 ms 9872 KB Output is correct
8 Correct 7 ms 9812 KB Output is correct
9 Correct 9 ms 9940 KB Output is correct
10 Correct 9 ms 9940 KB Output is correct
11 Correct 8 ms 9996 KB Output is correct
12 Correct 7 ms 10000 KB Output is correct
13 Correct 8 ms 9868 KB Output is correct
14 Correct 7 ms 9940 KB Output is correct
15 Correct 9 ms 9684 KB Output is correct
16 Correct 9 ms 9732 KB Output is correct
17 Correct 255 ms 32528 KB Output is correct
18 Correct 230 ms 34724 KB Output is correct
19 Correct 269 ms 34284 KB Output is correct
20 Correct 320 ms 35128 KB Output is correct
21 Correct 330 ms 35024 KB Output is correct
22 Correct 272 ms 34184 KB Output is correct
23 Correct 183 ms 36000 KB Output is correct
24 Correct 161 ms 32220 KB Output is correct
25 Correct 152 ms 32556 KB Output is correct
26 Correct 243 ms 32584 KB Output is correct
27 Correct 183 ms 35272 KB Output is correct
28 Correct 170 ms 34856 KB Output is correct
29 Correct 172 ms 32504 KB Output is correct
30 Correct 103 ms 31648 KB Output is correct
31 Correct 5 ms 9684 KB Output is correct
32 Correct 268 ms 35152 KB Output is correct
33 Correct 247 ms 35976 KB Output is correct
34 Correct 270 ms 36000 KB Output is correct
35 Correct 160 ms 35004 KB Output is correct
36 Correct 263 ms 36104 KB Output is correct
37 Correct 220 ms 32580 KB Output is correct
38 Correct 215 ms 32576 KB Output is correct
39 Correct 102 ms 31684 KB Output is correct
40 Correct 195 ms 33628 KB Output is correct
41 Correct 208 ms 34200 KB Output is correct
42 Correct 6 ms 9684 KB Output is correct
43 Correct 295 ms 33076 KB Output is correct
44 Correct 291 ms 34344 KB Output is correct
45 Correct 289 ms 35164 KB Output is correct
46 Correct 337 ms 35288 KB Output is correct
47 Correct 241 ms 33000 KB Output is correct
48 Correct 149 ms 33652 KB Output is correct
49 Correct 127 ms 32932 KB Output is correct
50 Correct 159 ms 22892 KB Output is correct
51 Correct 247 ms 35200 KB Output is correct
52 Correct 204 ms 34380 KB Output is correct
53 Correct 6 ms 9684 KB Output is correct
54 Correct 6 ms 9684 KB Output is correct
55 Correct 5 ms 9684 KB Output is correct
56 Correct 8 ms 9940 KB Output is correct
57 Correct 8 ms 9996 KB Output is correct
58 Correct 7 ms 9852 KB Output is correct
59 Correct 7 ms 9940 KB Output is correct
60 Correct 7 ms 9812 KB Output is correct
61 Correct 7 ms 9984 KB Output is correct
62 Correct 16 ms 10004 KB Output is correct
63 Correct 7 ms 9940 KB Output is correct
64 Correct 10 ms 9940 KB Output is correct
65 Correct 9 ms 9940 KB Output is correct
66 Correct 9 ms 9872 KB Output is correct
67 Correct 166 ms 33384 KB Output is correct
68 Correct 167 ms 34720 KB Output is correct
69 Correct 242 ms 34192 KB Output is correct
70 Correct 369 ms 35268 KB Output is correct
71 Correct 255 ms 34960 KB Output is correct
72 Correct 257 ms 34112 KB Output is correct
73 Correct 196 ms 35964 KB Output is correct
74 Correct 157 ms 32216 KB Output is correct
75 Correct 141 ms 32616 KB Output is correct
76 Correct 240 ms 32632 KB Output is correct
77 Correct 185 ms 35264 KB Output is correct
78 Correct 177 ms 34768 KB Output is correct
79 Correct 179 ms 32464 KB Output is correct
80 Correct 105 ms 31552 KB Output is correct
81 Correct 257 ms 35984 KB Output is correct
82 Correct 320 ms 36064 KB Output is correct
83 Correct 205 ms 36032 KB Output is correct
84 Correct 188 ms 34988 KB Output is correct
85 Correct 314 ms 36064 KB Output is correct
86 Correct 207 ms 32548 KB Output is correct
87 Correct 213 ms 32616 KB Output is correct
88 Correct 192 ms 33568 KB Output is correct
89 Correct 225 ms 34100 KB Output is correct
90 Correct 275 ms 33792 KB Output is correct
91 Correct 315 ms 34324 KB Output is correct
92 Correct 337 ms 35124 KB Output is correct
93 Correct 306 ms 35256 KB Output is correct
94 Correct 280 ms 32876 KB Output is correct
95 Correct 211 ms 33652 KB Output is correct
96 Correct 136 ms 32944 KB Output is correct
97 Correct 150 ms 22860 KB Output is correct
98 Correct 212 ms 35152 KB Output is correct
99 Correct 218 ms 34372 KB Output is correct
100 Correct 57 ms 14056 KB Output is correct
101 Correct 336 ms 34544 KB Output is correct
102 Correct 210 ms 29068 KB Output is correct
103 Correct 282 ms 29760 KB Output is correct
104 Correct 256 ms 33168 KB Output is correct