oj.uz

Submission #824164

# Submission time Handle Problem Language Result Execution time Memory
824164 2023-08-13T16:15:25 Z GrindMachine Land of the Rainbow Gold (APIO17_rainbow) C++17
11 / 100
 3000 ms 11520 KB 
// Om Namah Shivaya

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x, y) ((x + y - 1) / (y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i, n) for(int i = 0; i < n; ++i)
#define rep1(i, n) for(int i = 1; i <= n; ++i)
#define rev(i, s, e) for(int i = s; i >= e; --i)
#define trav(i, a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a, b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a, b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*



*/

const int MOD = 1e9 + 7;
const int N = 2e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;

#include "rainbow.h"

struct DSU {
    vector<int> par, rankk, siz;

    DSU() {

    }

    DSU(int n) {
        init(n);
    }

    void init(int n) {
        par = vector<int>(n + 1);
        rankk = vector<int>(n + 1);
        siz = vector<int>(n + 1);
        rep(i, n + 1) create(i);
    }

    void create(int u) {
        par[u] = u;
        rankk[u] = 0;
        siz[u] = 1;
    }

    int find(int u) {
        if (u == par[u]) return u;
        else return par[u] = find(par[u]);
    }

    bool same(int u, int v) {
        return find(u) == find(v);
    }

    void merge(int u, int v) {
        u = find(u), v = find(v);
        if (u == v) return;

        if (rankk[u] == rankk[v]) rankk[u]++;
        if (rankk[u] < rankk[v]) swap(u, v);

        par[v] = u;
        siz[u] += siz[v];
    }
};

vector<int> here[N];
vector<pii> row_segs[N];
int n,m;

void init(int n_, int m_, int sr, int sc, int k, char *S) {
    n = n_;
    m = m_;
    here[sr].pb(sc);
    rep(i,k){
        char ch = S[i];
        if(ch == 'E'){
            sc++;
        }
        else if(ch == 'W'){
            sc--;
        }
        else if(ch == 'N'){
            sr--;
        }
        else{
            sr++;
        }
        here[sr].pb(sc);
    }    

    rep1(i,n){
        auto &v = here[i];
        sort(all(v));
        v.resize(unique(all(v))-v.begin());
    }
}

int colour(int ar, int ac, int br, int bc) {
    vector<array<int,3>> prev_segs;
    vector<pii> edges;
    int ptr = 1;

    for(int i = ar; i <= br; ++i){
        vector<array<int,3>> curr_segs;
        auto add = [&](int l, int r){
            if(l <= r){
                curr_segs.pb({l,r,ptr++});
            }
        };

        // auto it = lower_bound(all(here[i]),ac);
        // if(it == here[i].end() or *it > bc){
        //     add(ac,bc);
        // }
        // else{
        //     add(ac,*it-1);
        //     int pos = it-here[i].begin();
        //     int siz = sz(here[i]);

        //     while(true){
        //         if(here[i][pos] > bc) break;
        //         if(pos+1 == siz){
        //             add(here[i][pos]+1,bc);
        //             break;
        //         }
        //         else{
        //             add(here[i][pos]+1,min(here[i][pos+1]-1,bc));
        //             pos++;
        //         }
        //     }
        // }

        int l = -1;
        auto &vec = here[i];

        for(int j = ac; j <= bc; ++j){
            if(binary_search(all(vec),j)){
                if(l != -1){
                    curr_segs.pb({l,j-1,ptr++});
                }
                l = -1;
            }
            else{
                if(l == -1){
                    l = j;
                }
            }
        }

        if(l != -1){
            curr_segs.pb({l,bc,ptr++});
        }

        for(auto [l1,r1,u] : prev_segs){
            for(auto [l2,r2,v] : curr_segs){
                if(max(l1,l2) <= min(r1,r2)){
                    edges.pb({u,v});
                }
            }
        }

        // trav(ar,curr_segs){
        //     debug(ar);
        // }
        // cout << endl;

        prev_segs = curr_segs;
    }

    ptr--;

    // debug(ptr);
    // debug(edges);

    DSU dsu(ptr+5);
    for(auto [u,v] : edges){
        dsu.merge(u,v);
    }

    int ans = 0;

    rep1(i,ptr){
        if(dsu.find(i) == i){
            ans++;
        }
    }

    return ans;
}

Compilation message

rainbow.cpp: In function 'int colour(int, int, int, int)':
rainbow.cpp:148:14: warning: variable 'add' set but not used [-Wunused-but-set-variable]
  148 |         auto add = [&](int l, int r){
      |              ^~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9720 KB Output is correct
2 Correct 11 ms 9756 KB Output is correct
3 Correct 10 ms 9684 KB Output is correct
4 Correct 13 ms 9684 KB Output is correct
5 Correct 13 ms 9828 KB Output is correct
6 Correct 7 ms 9684 KB Output is correct
7 Correct 7 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 7 ms 9684 KB Output is correct
10 Correct 6 ms 9696 KB Output is correct
11 Correct 11 ms 9708 KB Output is correct
12 Correct 15 ms 9708 KB Output is correct
13 Correct 21 ms 9856 KB Output is correct
14 Correct 14 ms 9856 KB Output is correct
15 Correct 5 ms 9684 KB Output is correct
16 Correct 4 ms 9684 KB Output is correct
17 Correct 1 ms 9700 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 1 ms 9700 KB Output is correct
3 Execution timed out 3051 ms 10172 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Execution timed out 3076 ms 10940 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9720 KB Output is correct
2 Correct 11 ms 9756 KB Output is correct
3 Correct 10 ms 9684 KB Output is correct
4 Correct 13 ms 9684 KB Output is correct
5 Correct 13 ms 9828 KB Output is correct
6 Correct 7 ms 9684 KB Output is correct
7 Correct 7 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 7 ms 9684 KB Output is correct
10 Correct 6 ms 9696 KB Output is correct
11 Correct 11 ms 9708 KB Output is correct
12 Correct 15 ms 9708 KB Output is correct
13 Correct 21 ms 9856 KB Output is correct
14 Correct 14 ms 9856 KB Output is correct
15 Correct 5 ms 9684 KB Output is correct
16 Correct 4 ms 9684 KB Output is correct
17 Correct 1 ms 9700 KB Output is correct
18 Execution timed out 3062 ms 11520 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9720 KB Output is correct
2 Correct 11 ms 9756 KB Output is correct
3 Correct 10 ms 9684 KB Output is correct
4 Correct 13 ms 9684 KB Output is correct
5 Correct 13 ms 9828 KB Output is correct
6 Correct 7 ms 9684 KB Output is correct
7 Correct 7 ms 9684 KB Output is correct
8 Correct 5 ms 9684 KB Output is correct
9 Correct 7 ms 9684 KB Output is correct
10 Correct 6 ms 9696 KB Output is correct
11 Correct 11 ms 9708 KB Output is correct
12 Correct 15 ms 9708 KB Output is correct
13 Correct 21 ms 9856 KB Output is correct
14 Correct 14 ms 9856 KB Output is correct
15 Correct 5 ms 9684 KB Output is correct
16 Correct 4 ms 9684 KB Output is correct
17 Correct 1 ms 9700 KB Output is correct
18 Execution timed out 3062 ms 11520 KB Time limit exceeded
19 Halted 0 ms 0 KB -