Submission #75116

#	Time	Username	Problem	Language	Result	Execution time	Memory
75116		bogdan10bos	Dango Maker (JOI18_dango_maker)	C++14	13 / 100	3 ms	776 KiB

dango_maker

#include <bits/stdc++.h>

using namespace std;

//#define FILE_IO

int N, M, ans, sol;
char a[3005][3005];
int f[3005][3005];

int main()
{
    #ifdef FILE_IO
    freopen("1.in", "r", stdin);
    freopen("1.out", "w", stdout);
    #endif

    scanf("%d%d\n", &N, &M);
    for(int i = 1; i <= N; i++)
        scanf("%s", a[i] + 1);

    for(int i = 1; i <= N; i++)
        for(int j = 1; j + 2 <= M; j++)
            if(a[i][j] == 'R' && a[i][j + 1] == 'G' && a[i][j + 2] == 'W')
            {
                ans++;
                f[i][j] = f[i][j + 1] = f[i][j + 2] = 1;
            }

    for(int j = 1; j <= M; j++)
        for(int i = 1; i + 2 <= N; i++)
            if(a[i][j] == 'R' && a[i + 1][j] == 'G' && a[i + 2][j] == 'W' && f[i][j] != 1 && f[i + 1][j] != 1 && f[i + 2][j] != 1)
            {
                ans++;
                f[i][j] = f[i + 1][j] = f[i + 2][j] = 1;
            }

    for(int j = 1; j <= M; j++)
        for(int i = 1; i + 2 <= N; i++)
            if(a[i][j] == 'R' && a[i + 1][j] == 'G' && a[i + 2][j] == 'W')
            {
                sol++;
                f[i][j] = f[i + 1][j] = f[i + 2][j] = 2;
            }

    for(int i = 1; i <= N; i++)
        for(int j = 1; j + 2 <= M; j++)
            if(a[i][j] == 'R' && a[i][j + 1] == 'G' && a[i][j + 2] == 'W' && f[i][j] != 2 && f[i][j + 1] != 2 && f[i][j + 2] != 2)
            {
                sol++;
                f[i][j] = f[i][j + 1] = f[i][j + 2] = 2;
            }

    printf("%d\n", max(ans, sol));

    return 0;
}

Compilation message (stderr)

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d\n", &N, &M);
     ~~~~~^~~~~~~~~~~~~~~~~~
dango_maker.cpp:20:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s", a[i] + 1);
         ~~~~~^~~~~~~~~~~~~~~~

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