Submission #916529

#	Time	Username	Problem	Language	Result	Execution time	Memory
916529		vjudge1	Dango Maker (JOI18_dango_maker)	C++11	13 / 100	1 ms	348 KiB

dango_maker

#include <iostream>
using namespace std;

int N, M, ans;
char a[3010][3010];

int validG(int x, int y) {
  if (a[x-1][y] == 'R' && a[x][y] == 'G' && a[x+1][y] == 'W') return 1;
  if (a[x][y-1] == 'R' && a[x][y] == 'G' && a[x][y+1] == 'W') return 2;
  return false;
}

bool overlap(int x, int y) {
  if (validG(x,y) + validG(x-1,y+1) == 3) return true;
}

int main() 
{
  cin >> N >> M;
  for(int i=1; i<=N; i++) {
    for(int j=1; j<=M; j++) {
      cin >> a[i][j];
    }
  }
  for(int i=1; i<=N; i++) {
    int x = i;
    int y = 1;
    while(x>=1 && y<=M) {
      if (validG(x,y)) {
        ans++;
        if(overlap(x,y)) {
          x--;
          y++;
        } 
      }
      x--;
      y++;
    }
  }
  for(int j=2; j<=M; j++) {
    int x = N;
    int y = j;
    while(x>=1 && y<=M) {
      if (validG(x,y)) {
        ans++;
        if(overlap(x,y)) {
          x--;
          y++;
        } 
      }
      x--;
      y++;
    }
  }
  cout << ans << endl;
}

Compilation message (stderr)

dango_maker.cpp: In function 'bool overlap(int, int)':
dango_maker.cpp:15:1: warning: control reaches end of non-void function [-Wreturn-type]
   15 | }
      | ^

• Subtask 1: 13 / 13
• Subtask 2: 0 / 20
• Subtask 3: 0 / 67