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Submission #200321

# Submission time Handle Problem Language Result Execution time Memory
200321 2020-02-06T10:16:30 Z Nordway Land of the Rainbow Gold (APIO17_rainbow) C++14
23 / 100
 88 ms 4796 KB 
#include<bits/stdc++.h>
//#include "rainbow.h"

#define x first
#define y second
#define pb push_back
#define sz(v) (int)v.size()

using namespace std;

const int N=1e3+11;
const int M=2e5+11;
const int dx[4]={0,0,-1,1};
const int dy[4]={1,-1,0,0};

int n,m;
int x,y;
string s;
bool used[N][N];
bool us[3][M];
int cnt[M],p[3][M];
int msk[M];

void init(int R, int C, int sr, int sc, int M, char* S) {
  n=R;
  m=C;
  x=sr,y=sc;
  s=S;
  if(n==2){
    us[1][0]=1;
    us[2][0]=1;
    us[sr][sc]=1;
    for(int i=0;i<sz(s);i++){
      if(s[i]=='N')sr--;
      if(s[i]=='S')sr++;
      if(s[i]=='W')sc--;
      if(s[i]=='E')sc++;
      us[sr][sc]=1;
    }
    int lst=0;
    msk[0]=lst;
    for(int i=1;i<=m;i++){
      int cur=3;
      for(int j=1;j<=2;j++){
        if(us[j][i])cur^=(1<<(j-1));
      }
      msk[i]=cur;
      if((lst&cur)==0&&cur>0)cnt[i]=cnt[i-1]+1;
      else cnt[i]=cnt[i-1];
      lst=cur;
    }
    for(int i=1;i<=2;i++){
      for(int j=1;j<=m;j++){
        if(us[i][j]==1)p[i][j]=p[i][j-1];
        else if(us[i][j-1]==0&&j>1)p[i][j]=p[i][j-1];
        else p[i][j]=p[i][j-1]+1;
      }
    }
  }
}

void dfs(int r,int c){
  used[r][c]=1;
  //cout<<r<<" "<<c<<endl;
  for(int i=0;i<4;i++){
    int nx=r+dx[i],ny=c+dy[i];
    if(used[nx][ny])continue;
    dfs(nx,ny);
  }
}

int colour(int ar, int ac, int br, int bc) {
  if(n==2){
    if(ar==br){
      return p[ar][bc]-p[ar][ac-1]+(us[ar][ac]==0&&us[ar][ac-1]==0);
    }
    else{
      return cnt[bc]-cnt[ac-1]+((msk[ac]&msk[ac-1])!=0);
    }
  }
  else if(max(n,m)<=50){
    int ans=0;
    for(int i=0;i<=n+1;i++){
      for(int j=0;j<=m+1;j++){
        if(ar<=i&&i<=br&&ac<=j&&j<=bc){
          used[i][j]=0;
          continue;
        }
        used[i][j]=1;
      }
    }
    int sr=x,sc=y;
    used[sr][sc]=1;
    for(int i=0;i<sz(s);i++){
      if(s[i]=='N')sr--;
      if(s[i]=='S')sr++;
      if(s[i]=='W')sc--;
      if(s[i]=='E')sc++;
      used[sr][sc]=1;
    }

    for(int i=ar;i<=br;i++){
      for(int j=ac;j<=bc;j++){
        if(!used[i][j]){
          dfs(i,j);
          //cout<<endl;
          ans++;
        }
      }
    }
    return ans;
  }
}

/*static int R, C, M, Q;
static int sr, sc;
static char S[100000 + 5];

int main() {
    scanf("%d %d %d %d", &R, &C, &M, &Q);
    scanf("%d %d", &sr, &sc);
    if (M > 0) {
        scanf(" %s ", S);
    }

    init(R, C, sr, sc, M, S);

    int query;
    for (query = 0; query < Q; query++) {
        int ar, ac, br, bc;
        scanf("%d %d %d %d", &ar, &ac, &br, &bc);
        printf("%d\n", colour(ar, ac, br, bc));
    }

    return 0;
}*/

Compilation message

rainbow.cpp: In function 'int colour(int, int, int, int)':
rainbow.cpp:113:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 376 KB Output is correct
2 Correct 15 ms 376 KB Output is correct
3 Correct 17 ms 504 KB Output is correct
4 Correct 18 ms 376 KB Output is correct
5 Correct 17 ms 376 KB Output is correct
6 Correct 4 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 18 ms 376 KB Output is correct
12 Correct 18 ms 372 KB Output is correct
13 Correct 15 ms 376 KB Output is correct
14 Correct 17 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 380 KB Output is correct
17 Correct 5 ms 376 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 78 ms 4472 KB Output is correct
4 Correct 80 ms 4600 KB Output is correct
5 Correct 78 ms 4600 KB Output is correct
6 Correct 76 ms 4472 KB Output is correct
7 Correct 88 ms 4596 KB Output is correct
8 Correct 76 ms 4372 KB Output is correct
9 Correct 77 ms 4600 KB Output is correct
10 Correct 81 ms 4600 KB Output is correct
11 Correct 75 ms 4472 KB Output is correct
12 Correct 65 ms 4472 KB Output is correct
13 Correct 65 ms 4600 KB Output is correct
14 Correct 73 ms 4796 KB Output is correct
15 Correct 65 ms 4472 KB Output is correct
16 Correct 75 ms 4472 KB Output is correct

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Incorrect 5 ms 504 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 376 KB Output is correct
2 Correct 15 ms 376 KB Output is correct
3 Correct 17 ms 504 KB Output is correct
4 Correct 18 ms 376 KB Output is correct
5 Correct 17 ms 376 KB Output is correct
6 Correct 4 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 18 ms 376 KB Output is correct
12 Correct 18 ms 372 KB Output is correct
13 Correct 15 ms 376 KB Output is correct
14 Correct 17 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 380 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Incorrect 67 ms 1272 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 376 KB Output is correct
2 Correct 15 ms 376 KB Output is correct
3 Correct 17 ms 504 KB Output is correct
4 Correct 18 ms 376 KB Output is correct
5 Correct 17 ms 376 KB Output is correct
6 Correct 4 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 18 ms 376 KB Output is correct
12 Correct 18 ms 372 KB Output is correct
13 Correct 15 ms 376 KB Output is correct
14 Correct 17 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 5 ms 380 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Incorrect 67 ms 1272 KB Output isn't correct
19 Halted 0 ms 0 KB -