제출 #224505

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
224505		Ruxandra985	Dango Maker (JOI18_dango_maker)	C++14	100 / 100	311 ms	124080 KiB

dango_maker

#include <bits/stdc++.h>

using namespace std;
char a[3010][3010];
int dp[3010][3010][3];

int main()
{
    FILE *fin = stdin;
    FILE *fout = stdout;
    int n , m , dif , i , j , sol = 0;
    fscanf (fin,"%d%d\n",&n,&m);
    for (i = 1 ; i <= n ; i++)
        fgets(a[i] + 1 , m + 10 , fin);

    for (dif = 1 - m ; dif <= n - 1 ; dif++){

        for (i = 1 ; i <= n ; i++){
            /// i - j = dif
            j = i - dif;

            if (j <= 0 || j > m)
                continue; /// nu e ok

            /// acum avem o pereche i j

            dp[i][j][0] = max(dp[i - 1][j + 1][0] ,max ( dp[i - 1][j + 1][1] , dp[i - 1][j + 1][2] ));
            /// nu mi se impune nimic pt ca nu l iau pe i j

            if (a[i][j - 1] == 'R' && a[i][j] == 'G' && a[i][j + 1] == 'W')
                dp[i][j][1] = max(dp[i - 1][j + 1][0] , dp[i - 1][j + 1][1]) + 1;

            /// R G W orizontal

            if (a[i - 1][j] == 'R' && a[i][j] == 'G' && a[i + 1][j] == 'W')
                dp[i][j][2] = max(dp[i - 1][j + 1][0] , dp[i - 1][j + 1][2]) + 1;

            /// R G W vertical

            if (i + 1 > n || j - 1 <= 0) /// stare finala, n o mai folosesc la nimic
                sol += max(dp[i][j][0] , max(dp[i][j][1] , dp[i][j][2]));

        }

    }
    fprintf (fout,"%d",sol);
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:12:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     fscanf (fin,"%d%d\n",&n,&m);
     ~~~~~~~^~~~~~~~~~~~~~~~~~~~
dango_maker.cpp:14:14: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         fgets(a[i] + 1 , m + 10 , fin);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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