Submission #950851

#	Time	Username	Problem	Language	Result	Execution time	Memory
950851		ace5	Dango Maker (JOI18_dango_maker)	C++17	100 / 100	82 ms	18028 KiB

dango_maker

#include <cstdio>
char a[3001][3001];
bool u[3001][3001];
int ans = 0;
int main(){
    int n,m;
    scanf("%d%d",&n,&m);
    for(int i = 0;i < n;++i)scanf("%s",a[i]);
    for(int i = 0;i < n;++i)
        for(int j = 0;j < m;++j){
            if(a[i][j]!='R')continue;
            if(j<m-2&&a[i][j+1]=='G'&&a[i][j+2]=='W'&&!(u[i][j+1]+u[i][j+2]))ans++;
            else if(i<n-2&&a[i+1][j]=='G'&&a[i+2][j]=='W'){
                if(j>0&&j<m-1&&a[i+1][j-1]=='R'&&a[i+1][j+1]=='W'&&!u[i+1][j+1])u[i+1][j]=1;
                else u[i+2][j]=1;
                ans++;
            }
        }
    printf("%d",ans);
}

Compilation message (stderr)

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%d%d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~
dango_maker.cpp:8:34: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     for(int i = 0;i < n;++i)scanf("%s",a[i]);
      |                             ~~~~~^~~~~~~~~~~

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