Submission #1050347

#	Time	Username	Problem	Language	Result	Execution time	Memory
1050347		vjudge1	Dango Maker (JOI18_dango_maker)	C++17	13 / 100	1 ms	2440 KiB

dango_maker

/*

author: CRISTIANO RONALDO

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
typedef tree<int,null_type,less<int>,rb_tree_tag,
tree_order_statistics_node_update> indexed_set;
can do: find_by_order, order_of_key

__builtin_clz(x): the number of zeros at the beginning of the number
__builtin_ctz(x): the number of zeros at the end of the number
__builtin_popcount(x): the number of ones in the number
__builtin_parity(x): the parity (even or odd) of the number of ones

mt19937 rng(16);
mt19937 bruh(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rofl(chrono::steady_clock::now().time_since_epoch().count());
*/
#include <bits/stdc++.h>
#define all(a) a.begin(), a.end()
#define F first
#define S second
#define pb push_back
#define lv v+v
#define rv v+v+1
#define files freopen("aa.txt", "r", stdin), freopen("aa.txt", "w", stdout)
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pll = pair <long long, long long>;
using pii = pair <int,int>;
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("O3")
long long mod = 998244353;
const ll N = 3e3 + 10;
const ll M = 7e3 + 10;
const ll P = 311;
const ld EPS = 1e-7;
const ll block = 450;
const ll inf = 2e18;
ll n,m,ans;
char a[N][N];
bool used[N][N];
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
cin>>n>>m;
for(ll i = 1; i<=n; i++) {
    for(ll j = 1; j<=m; j++) {
        cin>>a[i][j];
    }
}
for(ll i = n; i>0; i--) {
    for(ll j = m; j>m-2; j--) {
        if(a[i][j] == 'R' && !used[i][j] && a[i][j+1] == 'G' && !used[i][j+1] && a[i][j+2] == 'W' && !used[i][j+2]) {
            ans++;
            used[i][j] = used[i][j+1] = used[i][j+2] = true;
        }
    }
}
for(ll i = n; i>n-2; i--) {
    for(ll j = m; j>0; j--) {
        if(a[i][j] == 'R' && !used[i][j] && a[i+1][j] == 'G' && !used[i+1][j] && a[i+2][j] == 'W' && !used[i+2][j]) {
            ans++;
            used[i][j] = used[i+1][j] = used[i+2][j] = true;
        }
        else if(a[i][j] == 'R' && !used[i][j] && a[i][j+1] == 'G' && !used[i][j+1] && a[i][j+2] == 'W' && !used[i][j+2]) {
            ans++;
            used[i][j] = used[i][j+1] = used[i][j+2] = true;
        }
    }
}
for(ll i = n; i>0; i--) {
    for(ll j = m; j>0; j--) {
        if(a[i][j] == 'R' && !used[i][j] && a[i+1][j] == 'G' && !used[i+1][j] && a[i+2][j] == 'W' && !used[i+2][j]) {
            ans++;
            used[i][j] = used[i+1][j] = used[i+2][j] = true;
        }
        else if(a[i][j] == 'R' && !used[i][j] && a[i][j+1] == 'G' && !used[i][j+1] && a[i][j+2] == 'W' && !used[i][j+2]) {
            ans++;
            used[i][j] = used[i][j+1] = used[i][j+2] = true;
        }
    }
}
cout<<ans;
return 0;
}
// equal, min, max, 1, random, build
/*

*/

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