oj.uz

Submission #1021169

# Submission time Handle Problem Language Result Execution time Memory
1021169 2024-07-12T15:04:48 Z nisanduu Rectangles (IOI19_rect) C++14
0 / 100
 84 ms 41948 KB 
#include "rect.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
bool check(ll i,ll j,ll n,ll m,ll u,ll d,ll l,ll r,vector<vector<int>>&a){
    if(i<=0||j<=0||i>=(n-1)||j>=(m-1)) return false;
    if(a[i][j]<l&&a[i][j]<r&&a[i][j]<u&&a[i][j]<d) return true;
    return false;
}

long long count_rectangles(std::vector<std::vector<int> > a) {
    ll n = a.size();
    ll m = a[0].size();
    
    ll cnt = 0;
    map<ll,map<ll,ll>> hash;
    queue<vector<ll>> pq;
    // Row Col U D L R
    for(ll i=1;i<n-1;i++){
        for(ll j=1;j<m-1;j++){
            if(a[i][j]<a[i+1][j]&&a[i][j]<a[i-1][j]&&a[i][j]<a[i][j+1]&&a[i][j]<a[i][j-1]){
                vector<ll> vec = {i,j,a[i-1][j],a[i+1][j],a[i][j-1],a[i][j+1]};
                pq.push(vec);
                hash[i][j]=1;
            }
        }
    }
    vector<ll> dr = {-1,0,1,0};
    vector<ll> dc = {0,-1,0,1};
    ll ans = 0;
    while(!pq.empty()){
        vector<ll> v = pq.front();
        pq.pop();
        ans++;
        for(ll i=0;i<4;i++){
            ll nr = v[0]+dr[i];
            ll nc = v[1]+dc[i];
            if(check(nr,nc,n,m,v[2],v[3],v[4],v[5],a)){
                if(!hash[nr][nc]){
                    hash[nr][nc]=1;
                    vector<ll> nv = v;
                    if(i==0){
                        nv[2] = a[nr-1][nc];
                    }else if(i==1){
                        nv[4] = a[nr][nc-1];
                    }else if(i==2){
                        nv[3] = a[nr+1][nc];
                    }else{
                        nv[5] = a[nr][nc+1];
                    }
                    nv[0]=nr;
                    nv[1]=nc;
                    pq.push(nv);
                }
            }
        }
    }
	return ans;
}

Compilation message

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:16:8: warning: unused variable 'cnt' [-Wunused-variable]
   16 |     ll cnt = 0;
      |        ^~~

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Incorrect 84 ms 41948 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -