oj.uz

Submission #782505

# Submission time Handle Problem Language Result Execution time Memory
782505 2023-07-14T03:24:18 Z horiiseun Stranded Far From Home (BOI22_island) C++17
100 / 100
 115 ms 25348 KB 
#include <iostream>
#include <vector>
#include <tuple>
#include <queue>
#include <stack>
#include <deque>
#include <set>
#include <map>
#include <cmath>
#include <random>
#include <string>
#include <bitset>
#include <cassert>
#include <climits>
#include <algorithm>
#include <unordered_set>
#include <unordered_map>
using namespace std;
 
#define ll long long
#define f first
#define s second
 
void __print(int x) { cerr << x; }
void __print(long x) { cerr << x; }
void __print(long long x) { cerr << x; }
void __print(unsigned x) { cerr << x; }
void __print(unsigned long x) { cerr << x; }
void __print(unsigned long long x) { cerr << x; }
void __print(float x) { cerr << x; }
void __print(double x) { cerr << x; }
void __print(long double x) { cerr << x; }
void __print(char x) { cerr << '\'' << x << '\''; }
void __print(const char *x) { cerr << '\"' << x << '\"'; }
void __print(const string &x) { cerr << '\"' << x << '\"'; }
void __print(bool x) { cerr << (x ? "true" : "false"); }
 
template<typename A> void __print(const A &x);
template<typename A, typename B> void __print(const pair<A, B> &p);
template<typename... A> void __print(const tuple<A...> &t);
template<typename T> void __print(stack<T> s);
template<typename T> void __print(queue<T> q);
template<typename T, typename... U> void __print(priority_queue<T, U...> q);
 
template<typename A> void __print(const A &x) {
    bool first = true;
    cerr << '{';
    for (const auto &i : x) {
        cerr << (first ? "" : ","), __print(i);
        first = false;
    }
    cerr << '}';
}
 
template<typename A, typename B> void __print(const pair<A, B> &p) {
    cerr << '(';
    __print(p.f);
    cerr << ',';
    __print(p.s);
    cerr << ')';
}
 
template<typename... A> void __print(const tuple<A...> &t) {
    bool first = true;
    cerr << '(';
    apply([&first] (const auto &...args) { ((cerr << (first ? "" : ","), __print(args), first = false), ...); }, t);
    cerr << ')';
}
 
template<typename T> void __print(stack<T> s) {
    vector<T> debugVector;
    while (!s.empty()) {
        T t = s.top();
        debugVector.push_back(t);
        s.pop();
    }
    reverse(debugVector.begin(), debugVector.end());
    __print(debugVector);
}
 
template<typename T> void __print(queue<T> q) {
    vector<T> debugVector;
    while (!q.empty()) {
        T t = q.front();
        debugVector.push_back(t);
        q.pop();
    }
    __print(debugVector);
}
 
template<typename T, typename... U> void __print(priority_queue<T, U...> q) {
    vector<T> debugVector;
    while (!q.empty()) {
        T t = q.top();
        debugVector.push_back(t);
        q.pop();
    }
    __print(debugVector);
}
 
void _print() { cerr << "]\n"; }
 
template <typename Head, typename... Tail> void _print(const Head &H, const Tail &...T) {
    __print(H);
    if (sizeof...(T)) cerr << ", ";
    _print(T...);
}
 
#ifdef DEBUG
	#define D(...) cerr << "Line: " << __LINE__ << " [" << #__VA_ARGS__ << "] = ["; _print(__VA_ARGS__)
#else
    #define D(...)
#endif
 
int n, m, s[200005];
ll sm[200005];
vector<pair<ll, int>> ord;
vector<int> adj[200005];
bool ans[200005];
 
struct UnionFind {
    int par[200005];
    ll nx[200005];
    UnionFind() {
        for (int i = 0; i < 200005; i++) {
            par[i] = i;
            nx[i] = 0;
        }
    }
 
    int find(int x) {
        return par[x] == x ? x : par[x] = find(par[x]);
    }
 
    void merge(int x, int y) {
        x = find(x);
        y = find(y);
        if (x != y) {
            par[y] = x;
            sm[x] += sm[y];
            if (!nx[y] || s[nx[y]] == s[y]) nx[y] = x;
        }
    }
} uf;
 
int main() {
 
    ios_base::sync_with_stdio(false);
    cin.tie(0);
 
    cin >> n >> m;
    for (int i = 1; i <= n; i++) {
        cin >> s[i];
        ord.push_back({s[i], i});
    }   
    sort(ord.begin(), ord.end());
    for (int i = 0, a, b; i < m; i++) {
        cin >> a >> b;
        if (make_pair(s[a], a) < make_pair(s[b], b)) swap(a, b);
        adj[a].push_back(b);
    }
 
    for (auto [v, i] : ord) {
        sm[i] = s[i];
        for (int j : adj[i]) {
            uf.merge(i, j);
        }
    }
    reverse(ord.begin(), ord.end());
    uf.nx[ord[0].second] = 0;
    ans[0] = 1;
    for (auto [v, i] : ord) {
        if (ans[uf.nx[i]] && sm[i] >= s[uf.nx[i]]) {
            ans[i] = true;
        }
    }
 
    for (int i = 1; i <= n; i++) {
        cout << ans[i];
    }
    cout << "\n";
 
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7508 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 3 ms 7360 KB Output is correct
4 Correct 4 ms 7388 KB Output is correct
5 Correct 4 ms 7468 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7508 KB Output is correct
8 Correct 4 ms 7444 KB Output is correct
9 Correct 4 ms 7508 KB Output is correct
10 Correct 4 ms 7508 KB Output is correct
11 Correct 4 ms 7508 KB Output is correct
12 Correct 4 ms 7508 KB Output is correct
13 Correct 4 ms 7508 KB Output is correct
14 Correct 4 ms 7380 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB Output is correct
2 Correct 3 ms 7380 KB Output is correct
3 Correct 77 ms 21888 KB Output is correct
4 Correct 80 ms 23740 KB Output is correct
5 Correct 78 ms 21008 KB Output is correct
6 Correct 94 ms 21524 KB Output is correct
7 Correct 78 ms 21540 KB Output is correct
8 Correct 93 ms 23804 KB Output is correct
9 Correct 73 ms 20544 KB Output is correct
10 Correct 57 ms 18336 KB Output is correct
11 Correct 87 ms 22856 KB Output is correct
12 Correct 77 ms 21656 KB Output is correct
13 Correct 70 ms 25244 KB Output is correct
14 Correct 76 ms 25144 KB Output is correct
15 Correct 74 ms 23832 KB Output is correct
16 Correct 60 ms 23104 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB Output is correct
2 Correct 96 ms 21700 KB Output is correct
3 Correct 98 ms 21800 KB Output is correct
4 Correct 110 ms 23956 KB Output is correct
5 Correct 69 ms 23196 KB Output is correct
6 Correct 96 ms 21728 KB Output is correct
7 Correct 90 ms 23948 KB Output is correct
8 Correct 98 ms 23948 KB Output is correct
9 Correct 66 ms 23268 KB Output is correct
10 Correct 74 ms 21644 KB Output is correct
11 Correct 88 ms 20760 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 7380 KB Output is correct
2 Correct 104 ms 21580 KB Output is correct
3 Correct 97 ms 21500 KB Output is correct
4 Correct 115 ms 21560 KB Output is correct
5 Correct 98 ms 21572 KB Output is correct
6 Correct 106 ms 21048 KB Output is correct
7 Correct 69 ms 21404 KB Output is correct
8 Correct 62 ms 24256 KB Output is correct
9 Correct 61 ms 15632 KB Output is correct
10 Correct 78 ms 19836 KB Output is correct
11 Correct 83 ms 20812 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7508 KB Output is correct
2 Correct 4 ms 7380 KB Output is correct
3 Correct 3 ms 7360 KB Output is correct
4 Correct 4 ms 7388 KB Output is correct
5 Correct 4 ms 7468 KB Output is correct
6 Correct 4 ms 7380 KB Output is correct
7 Correct 4 ms 7508 KB Output is correct
8 Correct 4 ms 7444 KB Output is correct
9 Correct 4 ms 7508 KB Output is correct
10 Correct 4 ms 7508 KB Output is correct
11 Correct 4 ms 7508 KB Output is correct
12 Correct 4 ms 7508 KB Output is correct
13 Correct 4 ms 7508 KB Output is correct
14 Correct 4 ms 7380 KB Output is correct
15 Correct 3 ms 7380 KB Output is correct
16 Correct 3 ms 7380 KB Output is correct
17 Correct 77 ms 21888 KB Output is correct
18 Correct 80 ms 23740 KB Output is correct
19 Correct 78 ms 21008 KB Output is correct
20 Correct 94 ms 21524 KB Output is correct
21 Correct 78 ms 21540 KB Output is correct
22 Correct 93 ms 23804 KB Output is correct
23 Correct 73 ms 20544 KB Output is correct
24 Correct 57 ms 18336 KB Output is correct
25 Correct 87 ms 22856 KB Output is correct
26 Correct 77 ms 21656 KB Output is correct
27 Correct 70 ms 25244 KB Output is correct
28 Correct 76 ms 25144 KB Output is correct
29 Correct 74 ms 23832 KB Output is correct
30 Correct 60 ms 23104 KB Output is correct
31 Correct 3 ms 7380 KB Output is correct
32 Correct 96 ms 21700 KB Output is correct
33 Correct 98 ms 21800 KB Output is correct
34 Correct 110 ms 23956 KB Output is correct
35 Correct 69 ms 23196 KB Output is correct
36 Correct 96 ms 21728 KB Output is correct
37 Correct 90 ms 23948 KB Output is correct
38 Correct 98 ms 23948 KB Output is correct
39 Correct 66 ms 23268 KB Output is correct
40 Correct 74 ms 21644 KB Output is correct
41 Correct 88 ms 20760 KB Output is correct
42 Correct 3 ms 7380 KB Output is correct
43 Correct 104 ms 21580 KB Output is correct
44 Correct 97 ms 21500 KB Output is correct
45 Correct 115 ms 21560 KB Output is correct
46 Correct 98 ms 21572 KB Output is correct
47 Correct 106 ms 21048 KB Output is correct
48 Correct 69 ms 21404 KB Output is correct
49 Correct 62 ms 24256 KB Output is correct
50 Correct 61 ms 15632 KB Output is correct
51 Correct 78 ms 19836 KB Output is correct
52 Correct 83 ms 20812 KB Output is correct
53 Correct 3 ms 7376 KB Output is correct
54 Correct 3 ms 7376 KB Output is correct
55 Correct 3 ms 7380 KB Output is correct
56 Correct 3 ms 7508 KB Output is correct
57 Correct 4 ms 7392 KB Output is correct
58 Correct 4 ms 7380 KB Output is correct
59 Correct 5 ms 7488 KB Output is correct
60 Correct 4 ms 7508 KB Output is correct
61 Correct 4 ms 7508 KB Output is correct
62 Correct 4 ms 7508 KB Output is correct
63 Correct 4 ms 7508 KB Output is correct
64 Correct 4 ms 7380 KB Output is correct
65 Correct 3 ms 7480 KB Output is correct
66 Correct 4 ms 7380 KB Output is correct
67 Correct 79 ms 21936 KB Output is correct
68 Correct 78 ms 23688 KB Output is correct
69 Correct 76 ms 21032 KB Output is correct
70 Correct 81 ms 21444 KB Output is correct
71 Correct 76 ms 21524 KB Output is correct
72 Correct 89 ms 23904 KB Output is correct
73 Correct 69 ms 20508 KB Output is correct
74 Correct 58 ms 18412 KB Output is correct
75 Correct 87 ms 22804 KB Output is correct
76 Correct 80 ms 21688 KB Output is correct
77 Correct 83 ms 25348 KB Output is correct
78 Correct 72 ms 25144 KB Output is correct
79 Correct 101 ms 23852 KB Output is correct
80 Correct 60 ms 23004 KB Output is correct
81 Correct 97 ms 21824 KB Output is correct
82 Correct 99 ms 21816 KB Output is correct
83 Correct 91 ms 23960 KB Output is correct
84 Correct 69 ms 23104 KB Output is correct
85 Correct 99 ms 21824 KB Output is correct
86 Correct 96 ms 23928 KB Output is correct
87 Correct 90 ms 23956 KB Output is correct
88 Correct 75 ms 21688 KB Output is correct
89 Correct 82 ms 20764 KB Output is correct
90 Correct 98 ms 21540 KB Output is correct
91 Correct 102 ms 21552 KB Output is correct
92 Correct 108 ms 21660 KB Output is correct
93 Correct 99 ms 21656 KB Output is correct
94 Correct 87 ms 21068 KB Output is correct
95 Correct 79 ms 21524 KB Output is correct
96 Correct 64 ms 24260 KB Output is correct
97 Correct 64 ms 15704 KB Output is correct
98 Correct 73 ms 19896 KB Output is correct
99 Correct 85 ms 20840 KB Output is correct
100 Correct 31 ms 10700 KB Output is correct
101 Correct 101 ms 21660 KB Output is correct
102 Correct 92 ms 19264 KB Output is correct
103 Correct 93 ms 19812 KB Output is correct
104 Correct 100 ms 21416 KB Output is correct