Submission #1057621

#	Time	Username	Problem	Language	Result	Execution time	Memory
1057621		manhlinh1501	Dango Maker (JOI18_dango_maker)	C++17	13 / 100	1 ms	10844 KiB

dango_maker

#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
const int MAXN = 3e3 + 5;

int N, M;
char a[MAXN][MAXN];
bool vis[MAXN][MAXN];

signed main() {
#define TASK "code"

    if (fopen(TASK ".inp", "r")) {
        freopen(TASK ".inp", "r", stdin);
        freopen(TASK ".out", "w", stdout);
    }

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> N >> M;
    for(int i = 1; i <= N; i++) {
        for(int j = 1; j <= M; j++)
            cin >> a[i][j];
    }
    memset(vis, true, sizeof vis);
    int ans = 0;
    for(int i = 1; i <= N; i++) {
        for(int j = 1; j <= M; j++) {
            if(a[i][j] == 'R') {
                if(a[i + 1][j] == 'G' and a[i + 2][j] == 'W' and vis[i][j] and vis[i + 1][j] and vis[i + 2][j]) {
                    ans++;
                    vis[i][j] = vis[i + 1][j] = vis[i + 2][j] = false;
                } else if(a[i][j + 1] == 'G' and a[i][j + 2] == 'W' and vis[i][j] and vis[i][j + 1] and vis[i][j + 2]) {
                    ans++;
                    vis[i][j] = vis[i][j + 1] = vis[i][j + 2] = false;
                }
            }
        }
    }
    cout << ans;

    return (0 ^ 0);
}

Compilation message (stderr)

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:14:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         freopen(TASK ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
dango_maker.cpp:15:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |         freopen(TASK ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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