oj.uz

Submission #962527

# Submission time Handle Problem Language Result Execution time Memory
962527 2024-04-13T18:41:30 Z Mher777 Stranded Far From Home (BOI22_island) C++17
100 / 100
 148 ms 34496 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <iomanip>
#include <array>
#include <string>
#include <algorithm>
#include <cmath>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <bitset>
#include <list>
#include <iterator>
#include <numeric>
#include <complex>
#include <utility>
#include <random>
#include <cassert>
#include <fstream>
using namespace std;
mt19937 rnd(7069);

/* -------------------- Typedefs -------------------- */

typedef int itn;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef float fl;
typedef long double ld;

/* -------------------- Usings -------------------- */

using vi = vector<int>;
using vll = vector<ll>;
using mii = map<int, int>;
using mll = map<ll, ll>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

/* -------------------- Defines -------------------- */

#define ff first
#define ss second
#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define mpr make_pair
#define yes cout<<"Yes\n"
#define no cout<<"No\n"
#define all(x) (x).begin(), (x).end()
#define USACO freopen("feast.in", "r", stdin); freopen("feast.out", "w", stdout);

/* -------------------- Constants -------------------- */

const int MAX = int(1e9 + 5);
const ll MAXL = ll(1e18) + 5ll;
const ll MOD = ll(998244353);
const ll MOD2 = ll(998244353);

/* -------------------- Functions -------------------- */

void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}

void precision(int x) {
    cout.setf(ios::fixed | ios::showpoint);
    cout.precision(x);
}

ll gcd(ll a, ll b) {
    if (a == 0 || b == 0) return(max(a, b));
    while (b) {
        a %= b;
        swap(a, b);
    }
    return a;
}

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

ll range_sum(ll a, ll b) {
    if (a > b) return 0ll;
    ll dif = a - 1, cnt = b - a + 1;
    ll ans = ((b - a + 1) * (b - a + 2)) / 2;
    ans += ((b - a + 1) * dif);
    return ans;
}

string dec_to_bin(ll a) {
    string s = "";
    for (ll i = a; i > 0; ) {
        ll k = i % 2;
        i /= 2;
        char c = k + 48;
        s += c;
    }
    if (a == 0) {
        s = "0";
    }
    reverse(all(s));
    return s;
}

ll bin_to_dec(string s) {
    ll num = 0;
    for (int i = 0; i < s.size(); i++) {
        num *= 2ll;
        num += (s[i] - '0');
    }
    return num;
}

ll factorial_by_mod(ll n, ll mod) {
    ll ans = 1;
    ll num;
    for (ll i = 1; i <= n; ++i) {
        num = i % mod;
        ans *= num;
        ans %= mod;
    }
    return ans;
}

int isPrime(ll a) {
    if (a == 1) return 0;
    for (ll i = 2; i * i <= a; i++) {
        if (a % i == 0) return 0;
    }
    return 1;
}

ll binpow(ll a, ll b) {
    if (!a) return 0;
    ll ans = 1;
    while (b) {
        if (b & 1) {
            ans *= a;
        }
        b >>= 1;
        a *= a;
    }
    return ans;
}

ll binpow_by_mod(ll a, ll b, ll mod) {
    if (!a) return 0;
    ll ans = 1;
    while (b) {
        if (b & 1) {
            ans *= a;
            ans %= mod;
        }
        b >>= 1;
        a *= a;
        a %= mod;
    }
    return ans;
}

/* -------------------- Solution -------------------- */

const int N = 200005;
ll a[N], sum[N];
int ans[N], p[N], sz[N];
vi g[N], comp[N];
int n, m;

int find_set(int x) {
    if (x == p[x]) return x;
    return p[x] = find_set(p[x]);
}

void union_sets(int val, int x, int y) {
    x = find_set(x), y = find_set(y);
    if (x == y) return;
    if (sum[y] >= val) {
        if (sz[y] > sz[x]) swap(x, y);
        p[y] = x;
        sz[x] += sz[y];
        sum[x] += sum[y];
        for (auto elem : comp[y]) comp[x].pub(elem);
    }
    else {
        for (auto elem : comp[y]) ans[elem] = 0;
        comp[y].clear();
        if (sz[y] > sz[x]) swap(x, y);
        p[y] = x;
        sz[x] += sz[y];
        sum[x] += sum[y];
        for (auto elem : comp[y]) comp[x].pub(elem);
    }
}

void slv() {
    cin >> n >> m;
    for (int ind = 1; ind <= n; ++ind) {
        cin >> a[ind];
        ans[ind] = 1;
        sz[ind] = 1;
        p[ind] = ind;
        comp[ind] = { ind };
        sum[ind] = a[ind];
    }
    vector<pair<pii, pii>> v;
    for (int i = 0; i < m; ++i) {
        int x, y;
        cin >> x >> y;
        if (a[x] < a[y]) swap(x, y);
        v.pub({ {a[x],a[y]},{x,y} });
    }
    sort(all(v));
    for (auto elem : v) {
        union_sets(elem.ff.ff, elem.ss.ff, elem.ss.ss);
    }
    for (int i = 1; i <= n; ++i) {
        cout << ans[i];
    }
}

void cs() {
    int tstc = 1;
    //cin >> tstc;
    while (tstc--) {
        slv();
    }
}

void precalc() {
    return;
}

int main() {
    fastio();
    precalc();
    //precision(0);
    cs();
    return 0;
}

Compilation message

island.cpp: In function 'll range_sum(ll, ll)':
island.cpp:95:21: warning: unused variable 'cnt' [-Wunused-variable]
   95 |     ll dif = a - 1, cnt = b - a + 1;
      |                     ^~~
island.cpp: In function 'll bin_to_dec(std::string)':
island.cpp:118:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  118 |     for (int i = 0; i < s.size(); i++) {
      |                     ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 14936 KB Output is correct
2 Correct 3 ms 14936 KB Output is correct
3 Correct 4 ms 14940 KB Output is correct
4 Correct 4 ms 14936 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 5 ms 15208 KB Output is correct
7 Correct 4 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 4 ms 14940 KB Output is correct
10 Correct 5 ms 14936 KB Output is correct
11 Correct 4 ms 14940 KB Output is correct
12 Correct 4 ms 14940 KB Output is correct
13 Correct 4 ms 15104 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14940 KB Output is correct
2 Correct 4 ms 14936 KB Output is correct
3 Correct 84 ms 30908 KB Output is correct
4 Correct 85 ms 29528 KB Output is correct
5 Correct 112 ms 32068 KB Output is correct
6 Correct 113 ms 32540 KB Output is correct
7 Correct 103 ms 33292 KB Output is correct
8 Correct 93 ms 31060 KB Output is correct
9 Correct 88 ms 34484 KB Output is correct
10 Correct 75 ms 29632 KB Output is correct
11 Correct 79 ms 30132 KB Output is correct
12 Correct 98 ms 29684 KB Output is correct
13 Correct 79 ms 30204 KB Output is correct
14 Correct 92 ms 29680 KB Output is correct
15 Correct 89 ms 31612 KB Output is correct
16 Correct 67 ms 30248 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14936 KB Output is correct
2 Correct 102 ms 33472 KB Output is correct
3 Correct 102 ms 33464 KB Output is correct
4 Correct 99 ms 31136 KB Output is correct
5 Correct 76 ms 30088 KB Output is correct
6 Correct 111 ms 33120 KB Output is correct
7 Correct 84 ms 31616 KB Output is correct
8 Correct 92 ms 31160 KB Output is correct
9 Correct 67 ms 30768 KB Output is correct
10 Correct 83 ms 29412 KB Output is correct
11 Correct 93 ms 30376 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 14992 KB Output is correct
2 Correct 138 ms 31028 KB Output is correct
3 Correct 148 ms 31508 KB Output is correct
4 Correct 124 ms 32436 KB Output is correct
5 Correct 110 ms 33788 KB Output is correct
6 Correct 115 ms 32204 KB Output is correct
7 Correct 86 ms 31504 KB Output is correct
8 Correct 73 ms 29108 KB Output is correct
9 Correct 75 ms 24400 KB Output is correct
10 Correct 115 ms 33640 KB Output is correct
11 Correct 101 ms 30088 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 14936 KB Output is correct
2 Correct 3 ms 14936 KB Output is correct
3 Correct 4 ms 14940 KB Output is correct
4 Correct 4 ms 14936 KB Output is correct
5 Correct 3 ms 14940 KB Output is correct
6 Correct 5 ms 15208 KB Output is correct
7 Correct 4 ms 14940 KB Output is correct
8 Correct 3 ms 14940 KB Output is correct
9 Correct 4 ms 14940 KB Output is correct
10 Correct 5 ms 14936 KB Output is correct
11 Correct 4 ms 14940 KB Output is correct
12 Correct 4 ms 14940 KB Output is correct
13 Correct 4 ms 15104 KB Output is correct
14 Correct 4 ms 14940 KB Output is correct
15 Correct 3 ms 14940 KB Output is correct
16 Correct 4 ms 14936 KB Output is correct
17 Correct 84 ms 30908 KB Output is correct
18 Correct 85 ms 29528 KB Output is correct
19 Correct 112 ms 32068 KB Output is correct
20 Correct 113 ms 32540 KB Output is correct
21 Correct 103 ms 33292 KB Output is correct
22 Correct 93 ms 31060 KB Output is correct
23 Correct 88 ms 34484 KB Output is correct
24 Correct 75 ms 29632 KB Output is correct
25 Correct 79 ms 30132 KB Output is correct
26 Correct 98 ms 29684 KB Output is correct
27 Correct 79 ms 30204 KB Output is correct
28 Correct 92 ms 29680 KB Output is correct
29 Correct 89 ms 31612 KB Output is correct
30 Correct 67 ms 30248 KB Output is correct
31 Correct 3 ms 14936 KB Output is correct
32 Correct 102 ms 33472 KB Output is correct
33 Correct 102 ms 33464 KB Output is correct
34 Correct 99 ms 31136 KB Output is correct
35 Correct 76 ms 30088 KB Output is correct
36 Correct 111 ms 33120 KB Output is correct
37 Correct 84 ms 31616 KB Output is correct
38 Correct 92 ms 31160 KB Output is correct
39 Correct 67 ms 30768 KB Output is correct
40 Correct 83 ms 29412 KB Output is correct
41 Correct 93 ms 30376 KB Output is correct
42 Correct 4 ms 14992 KB Output is correct
43 Correct 138 ms 31028 KB Output is correct
44 Correct 148 ms 31508 KB Output is correct
45 Correct 124 ms 32436 KB Output is correct
46 Correct 110 ms 33788 KB Output is correct
47 Correct 115 ms 32204 KB Output is correct
48 Correct 86 ms 31504 KB Output is correct
49 Correct 73 ms 29108 KB Output is correct
50 Correct 75 ms 24400 KB Output is correct
51 Correct 115 ms 33640 KB Output is correct
52 Correct 101 ms 30088 KB Output is correct
53 Correct 3 ms 14940 KB Output is correct
54 Correct 4 ms 15000 KB Output is correct
55 Correct 3 ms 14940 KB Output is correct
56 Correct 4 ms 14940 KB Output is correct
57 Correct 4 ms 15256 KB Output is correct
58 Correct 4 ms 14940 KB Output is correct
59 Correct 4 ms 15092 KB Output is correct
60 Correct 4 ms 15024 KB Output is correct
61 Correct 3 ms 15164 KB Output is correct
62 Correct 4 ms 14936 KB Output is correct
63 Correct 5 ms 15092 KB Output is correct
64 Correct 4 ms 14940 KB Output is correct
65 Correct 5 ms 14940 KB Output is correct
66 Correct 4 ms 14940 KB Output is correct
67 Correct 86 ms 31636 KB Output is correct
68 Correct 81 ms 29736 KB Output is correct
69 Correct 102 ms 32008 KB Output is correct
70 Correct 110 ms 32704 KB Output is correct
71 Correct 114 ms 32696 KB Output is correct
72 Correct 95 ms 31360 KB Output is correct
73 Correct 89 ms 34484 KB Output is correct
74 Correct 83 ms 28996 KB Output is correct
75 Correct 86 ms 30132 KB Output is correct
76 Correct 103 ms 29632 KB Output is correct
77 Correct 80 ms 29624 KB Output is correct
78 Correct 84 ms 29568 KB Output is correct
79 Correct 83 ms 31156 KB Output is correct
80 Correct 63 ms 30908 KB Output is correct
81 Correct 118 ms 33912 KB Output is correct
82 Correct 127 ms 34496 KB Output is correct
83 Correct 97 ms 31640 KB Output is correct
84 Correct 93 ms 29164 KB Output is correct
85 Correct 119 ms 33972 KB Output is correct
86 Correct 86 ms 32040 KB Output is correct
87 Correct 77 ms 31160 KB Output is correct
88 Correct 84 ms 30656 KB Output is correct
89 Correct 99 ms 30132 KB Output is correct
90 Correct 127 ms 31616 KB Output is correct
91 Correct 116 ms 31420 KB Output is correct
92 Correct 127 ms 33344 KB Output is correct
93 Correct 122 ms 34044 KB Output is correct
94 Correct 112 ms 32008 KB Output is correct
95 Correct 96 ms 30904 KB Output is correct
96 Correct 88 ms 29884 KB Output is correct
97 Correct 79 ms 25284 KB Output is correct
98 Correct 124 ms 33796 KB Output is correct
99 Correct 101 ms 30120 KB Output is correct
100 Correct 54 ms 21716 KB Output is correct
101 Correct 147 ms 31740 KB Output is correct
102 Correct 101 ms 29744 KB Output is correct
103 Correct 123 ms 29764 KB Output is correct
104 Correct 109 ms 30544 KB Output is correct