Submission #1051900

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1051900	2024-08-10T10:29:08 Z	YassineBenYounes	Mechanical Doll (IOI18_doll)	C++17	6 / 100	64 ms	62548 KB

doll

#include<bits/stdc++.h>
#include<chrono>
#include<random>
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef double db;
ll gcd(ll a , ll b) {return b ? gcd(b , a % b) : a ;} // greatest common divisor (PGCD)
ll lcm(ll a , ll b) {return (a * b) / gcd(a , b);} // least common multiple (PPCM)
int dx[8] = {1, 0, 0, -1, 1, 1, -1, -1};
int dy[8] = {0, 1, -1, 0, 1, -1, -1, 1};
#define endl "\n"
#define ss second
#define ff first
#define all(x) (x).begin() , (x).end()
#define pb push_back
#define vi vector<int>
#define vii vector<pair<int,int>>
#define vl vector<ll>
#define vll vector<pair<ll,ll>>
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pdd  pair<double,double>
#define vdd  vector<pdd>
#define speed ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define pbds tree<pii, null_type, less<pii>,rb_tree_tag, tree_order_statistics_node_update>
using namespace __gnu_pbds;
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

////////////////////Only Clear Code//////////////////////////

void usaco_problem(){
    freopen("milkvisits.in", "r", stdin);
    freopen("milkvisits.out", "w", stdout);
}

void init(){
    #ifndef ONLINE_JUDGE

freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif // ONLINE_JUDGE
}
const int mx = 1e6+5;
const int LOG = 22;
const int inf = 1e9;
const ll mod = 1e9+7;
const int sq = 300;

#include "doll.h"
vi C;
vi X, Y;
vi graph[mx];
bool state[mx];
int value[mx];
vi v;
int _count(int n){
    int x = 0;
    int cnt = 1;
    while(cnt < n){
        cnt *=2;
        x++;
    }
    return x;
}



void dfs(int node, int l, int r){
    if(l == r){
        v.pb(node);
        return;
    }
    int md = (l+r)/2;
    if(state[node] == 0){
        dfs(node*2, l, md);
        state[node] = 1;
    }
    else{
        dfs(node*2+1, md+1, r);
        state[node] = 0;
    }
}

void create_circuit(int m, vi A){
    int N = A.size();
    C.clear();
    C.resize(m+1);
    X.clear();
    Y.clear();
    C[0] = A[0];
    graph[0].pb(A[0]);
    for(int i = 0;(i+1) < N;i++){
        C[A[i]] = A[i+1];
        graph[A[i]].pb(A[i+1]);
    }
    graph[A[N-1]].pb(0);
    int cur = -1;
    for(int i = 0; i <= m;i++){
        if(graph[i].size() == 0)continue;
        if(graph[i].size() == 1){
            C[i] = graph[i][0];
        }
        else{
            int k = _count(graph[i].size());
            int ind = 0;
            int n = (1 << k);
            for(int l = 1; l <= n-1;l++){
                value[l] = cur--;
                X.pb(0);
                Y.pb(0);
                state[l] = 0;
            }
            C[i] = value[1];
            for(int l = 1; l <= (n-1)/2;l++){
                X[-value[l]-1] = (value[l*2]);
                Y[-value[l]-1] = (value[l*2+1]);
            }
            v.clear();
            for(int i = 0; i < n;i++){
                dfs(1, 0, n-1);
            }
            int num = n - graph[i].size();
            for(int x : v){
                if(num > 0){
                    int node = x/2;
                    if(x % 2 == 0){
                        X.pb(0);
                        X[-cur-1] = value[1];
                        cur--;
                    }
                    else{
                        Y.pb(0);
                        Y[-cur-1] = value[1];
                        cur--;
                    }
                    num--;
                }
                else{
                    int node = x/2;
                    if(x % 2 == 0){
                        X[-value[node]-1] = graph[i][ind];
                        //cout << value[node] << " " << graph[i][ind] << endl;

                        ind++;
                    }
                    else{
                        Y[-value[node]-1] = graph[i][ind];
                        //cout << value[node] << " " << graph[i][ind] << endl;
                        ind++;
                    }
                }
            }
        }
    }
    answer(C, X, Y);
}
/*
int32_t main(){
    init();
    speed;
    create_circuit(4, {1, 2, 1, 2});
}*/

/*
    NEVER GIVE UP!
    DOING SMTHNG IS BETTER THAN DOING NTHNG!!!
    Your Guide when stuck:
    - Continue keyword only after reading the whole input
    - Don't use memset with testcases
    - Check for corner cases(n=1, n=0)
    - Check where you declare n(Be careful of declaring it globally and in main)
*/

Compilation message

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:129:25: warning: unused variable 'node' [-Wunused-variable]
  129 |                     int node = x/2;
      |                         ^~~~
doll.cpp: In function 'void usaco_problem()':
doll.cpp:36:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |     freopen("milkvisits.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
doll.cpp:37:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |     freopen("milkvisits.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
doll.cpp: In function 'void init()':
doll.cpp:43:8: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 | freopen("input.txt", "r", stdin);
      | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
doll.cpp:44:8: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 | freopen("output.txt", "w", stdout);
      | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	24544 KB	Output is correct
2	Correct	24 ms	28512 KB	Output is correct
3	Correct	28 ms	28080 KB	Output is correct
4	Correct	5 ms	24536 KB	Output is correct
5	Correct	9 ms	25692 KB	Output is correct
6	Correct	24 ms	30068 KB	Output is correct
7	Correct	3 ms	24412 KB	Output is correct

Subtask #2
4.0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	24544 KB	Output is correct
2	Correct	24 ms	28512 KB	Output is correct
3	Correct	28 ms	28080 KB	Output is correct
4	Correct	5 ms	24536 KB	Output is correct
5	Correct	9 ms	25692 KB	Output is correct
6	Correct	24 ms	30068 KB	Output is correct
7	Correct	3 ms	24412 KB	Output is correct
8	Correct	29 ms	32916 KB	Output is correct
9	Correct	37 ms	33232 KB	Output is correct
10	Correct	64 ms	36024 KB	Output is correct
11	Correct	6 ms	26460 KB	Output is correct
12	Correct	4 ms	26460 KB	Output is correct
13	Correct	5 ms	26460 KB	Output is correct

Subtask #3
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	24544 KB	Output is correct
2	Correct	24 ms	28512 KB	Output is correct
3	Correct	28 ms	28080 KB	Output is correct
4	Correct	5 ms	24536 KB	Output is correct
5	Correct	9 ms	25692 KB	Output is correct
6	Correct	24 ms	30068 KB	Output is correct
7	Correct	3 ms	24412 KB	Output is correct
8	Correct	29 ms	32916 KB	Output is correct
9	Correct	37 ms	33232 KB	Output is correct
10	Correct	64 ms	36024 KB	Output is correct
11	Correct	6 ms	26460 KB	Output is correct
12	Correct	4 ms	26460 KB	Output is correct
13	Correct	5 ms	26460 KB	Output is correct
14	Runtime error	41 ms	62548 KB	Execution killed with signal 6
15	Halted	0 ms	0 KB	-