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Submission #923297

# Submission time Handle Problem Language Result Execution time Memory
923297 2024-02-07T05:21:49 Z vjudge1 Maxcomp (info1cup18_maxcomp) C++17
15 / 100
 500 ms 600 KB 
// Отче наш, сущий на небесах! Да святится имя Твое; да приидет Царствие Твое; да будет воля Твоя и на земле, как на небе; хлеб наш насущный подавай нам на каждый день; и прости нам грехи наши, ибо и мы прощаем всякому должнику нашему; и не введи нас в искушение, но избавь нас от лукавого ML, TL, WA
#include <bits/stdc++.h>

#pragma optimize("Ofast")
#pragma target("avx2")

#define ll long long
#define ld long double
#define pii pair<int,int>
#define F first
#define S second
#define in insert
#define all(v) v.begin(),v.end()
#define pb push_back
#define sz(s) (int)s.size()
#define ppb pop_back
#define mem(a,i) memset(a,i,sizeof(a))
#define lb lower_bound
#define ub upper_bound
#define int ll

using namespace std;

const int MAX=21;
const int N=1000+10;
const int inf=1e18;
const int mod=1e9+9;
const int B=2003;
const ld eps=1e-9;

const int dx[4]={0,0,1,-1};
const int dy[4]={-1,1,0,0};

int binpow(int a,int n){
  if(n==0)return 1;
  if(n%2==1)return a*binpow(a,n-1)%mod;
  int k=binpow(a,n/2);
  return (k*k)%mod;
}

int n,m;
int ans=-inf;
int a[MAX][MAX];
int d[MAX][MAX];
int use[MAX][MAX];
int mark[MAX][MAX];

int bit(int i,int j){
  return (i>>j)&1;
}

int good(int i,int j){
  return (1<=i&&i<=n&&1<=j&&j<=m);
}

void dfs(int i,int j){
  use[i][j]=1;
  for(int k=0;k<4;k++){
    int ni=i+dx[k];
    int nj=j+dy[k];
    if(good(ni,nj)&&!use[ni][nj]&&mark[ni][nj]){
      dfs(ni,nj);
    }
  }
}

void solve(){
  cin>>n>>m;
  for(int i=1;i<=n;i++){
    for(int j=1;j<=m;j++){
      cin>>a[i][j];
    }
  }
  for(int mask=1;mask<(1<<(n*m));mask++){
    mem(use,0);
    mem(mark,0);
    vector<pii> v;
    for(int i=1;i<=n;i++){
      for(int j=1;j<=m;j++){
        if(bit(mask,(i-1)*m+j-1)){
          v.pb({i,j});
          mark[i][j]=1;
        }
      }
    }
    assert(!v.empty());
    // cout<<sz(v)<<"\n";
    dfs(v[0].F,v[0].S);
    int mn=inf,mx=-inf,ok=1;
    for(pii x:v){
      if(!use[x.F][x.S])ok=0;
      mn=min(mn,a[x.F][x.S]);
      mx=max(mx,a[x.F][x.S]);
    }
    if(ok){
      ans=max(ans,mx-mn-sz(v));
    }
  }
  cout<<ans<<"\n";
}

signed main(){
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int t=1;
  // cin>>t;
  while(t--){
    solve();
  }
}

Compilation message

maxcomp.cpp:4: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    4 | #pragma optimize("Ofast")
      | 
maxcomp.cpp:5: warning: ignoring '#pragma target ' [-Wunknown-pragmas]
    5 | #pragma target("avx2")
      |

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 366 ms 344 KB Output is correct
2 Correct 420 ms 440 KB Output is correct
3 Correct 416 ms 448 KB Output is correct
4 Correct 334 ms 600 KB Output is correct
5 Correct 413 ms 344 KB Output is correct
6 Correct 451 ms 444 KB Output is correct
7 Correct 443 ms 448 KB Output is correct
8 Correct 419 ms 600 KB Output is correct

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 600 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 366 ms 344 KB Output is correct
2 Correct 420 ms 440 KB Output is correct
3 Correct 416 ms 448 KB Output is correct
4 Correct 334 ms 600 KB Output is correct
5 Correct 413 ms 344 KB Output is correct
6 Correct 451 ms 444 KB Output is correct
7 Correct 443 ms 448 KB Output is correct
8 Correct 419 ms 600 KB Output is correct
9 Execution timed out 1046 ms 348 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 366 ms 344 KB Output is correct
2 Correct 420 ms 440 KB Output is correct
3 Correct 416 ms 448 KB Output is correct
4 Correct 334 ms 600 KB Output is correct
5 Correct 413 ms 344 KB Output is correct
6 Correct 451 ms 444 KB Output is correct
7 Correct 443 ms 448 KB Output is correct
8 Correct 419 ms 600 KB Output is correct
9 Runtime error 1 ms 600 KB Execution killed with signal 11
10 Halted 0 ms 0 KB -