제출 #710605

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
710605		ToroTN	Collecting Mushrooms (NOI18_collectmushrooms)	C++14	100 / 100	17 ms	15564 KiB

mushrooms

#include<bits/stdc++.h>
using namespace std;
int n,m,a1,b1,a2,b2,d,k;

int main()
{
    scanf("%d%d%d%d",&n,&m,&d,&k);
    char s[n+5][m+5];
    int sweep[n+5][m+5];
    memset(sweep,0,sizeof sweep);
    for(int i=1;i<=n;i++)scanf("%s",s[i]+1);
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            //printf("%c",s[i][j]);
            if(s[i][j]=='S')
            {
                a1=max(1,i-d),b1=max(1,j-d);
                a2=min(n+1,i+d+1),b2=min(m+1,j+d+1);
                //printf("%d %d %d %d\n",a1,b1,a2,b2);
                sweep[a1][b1]+=1;
                sweep[a1][b2]-=1,sweep[a2][b1]-=1,sweep[a2][b2]+=1;
            }
        }
        //printf("\n");
    }
    int ans=0;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=m;j++)
        {
            sweep[i][j]=sweep[i][j]+sweep[i-1][j]+sweep[i][j-1]-sweep[i-1][j-1];
            if(sweep[i][j]>=k&&s[i][j]=='M')++ans;
            //printf("%d ",sweep[i][j]);
        }
       // printf("\n");
    }
    printf("%d\n",ans);
}

컴파일 시 표준 에러 (stderr) 메시지

mushrooms.cpp: In function 'int main()':
mushrooms.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%d%d%d%d",&n,&m,&d,&k);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
mushrooms.cpp:11:31: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     for(int i=1;i<=n;i++)scanf("%s",s[i]+1);
      |                          ~~~~~^~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 18 / 18
• Subtask 4: 23 / 23
• Subtask 5: 19 / 19
• Subtask 6: 21 / 21