Submission #643527

#	Time	Username	Problem	Language	Result	Execution time	Memory
643527		GaLz	Dango Maker (JOI18_dango_maker)	C++14	13 / 100	4 ms	9172 KiB

dango_maker

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;
const ll mod=1e9+7;
const ll maxn=3e3+5;
const int INF=1e9;
#define ok ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define fi first
#define se second
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define endl '\n'
int n, m, ls, ans, ans2;
bool use[maxn][maxn];
char grid[maxn][maxn];
int main() {
    ok
    cin >> n >> m;
    for(int i=0; i<n; i++) {
        for(int j=0; j<m; j++) {
            cin >> grid[i][j];
        }
    }
    for(int i=0; i<n; i++) {
        for(int j=0; j<m-2; j++) {
            if(grid[i][j]=='R' && grid[i][j+1]=='G' && grid[i][j+2]=='W' && !use[i][j] && !use[i][j+1] && !use[i][j+2]) {
                ans++;
                use[i][j]=1;
                use[i][j+1]=1;
                use[i][j+2]=1;
            }
        }
        if(ls<m) {
            for(int j=0; j<n-2; j++) {
                if(grid[j][ls]=='R' && grid[j+1][ls]=='G' && grid[j+2][ls]=='W' && !use[j][ls] && !use[j+1][ls] && !use[j+2][ls]) {
                    ans++;
                    use[j][ls]=1;
                    use[j+1][ls]=1;
                    use[j+2][ls]=1;
                }
            }
            ls++;
        }
    }
    for(int i=ls; i<m; i++) {
        for(int j=0; j<n-2; j++) {
            if(grid[j][ls]=='R' && grid[j+1][ls]=='G' && grid[j+2][ls]=='W' && !use[j][ls] && !use[j+1][ls] && !use[j+2][ls]) {
                ans++;
                use[j][ls]=1;
                use[j+1][ls]=1;
                use[j+2][ls]=1;
            }
        }
    }
    ls=0;
    memset(use, 0, sizeof use);
    for(int i=0; i<m; i++) {
        for(int j=0; j<n-2; j++) {
            if(grid[j][i]=='R' && grid[j+1][i]=='G' && grid[j+2][i]=='W' && !use[j][i] && !use[j+1][i] && !use[j+2][i]) {
                ans2++;
                use[j][i]=1;
                use[j+1][i]=1;
                use[j+2][i]=1;
            }
        }
        if(ls<n) {
            for(int j=0; j<m-2; j++) {
                if(grid[ls][j]=='R' && grid[ls][j+1]=='G' && grid[ls][j+2]=='W' && !use[ls][j] && !use[ls][j+1] && !use[ls][j+2]) {
                    ans2++;
                    use[ls][j]=1;
                    use[ls][j+1]=1;
                    use[ls][j+2]=1;
                }
            }
            ls++;
        }
    }
    for(int i=ls; i<n; i++) {
        for(int j=0; j<m-2; j++) {
            if(grid[i][j]=='R' && grid[i][j+1]=='G' && grid[i][j+2]=='W' && !use[i][j] && !use[i][j+1] && !use[i][j+2]) {
                ans2++;
                use[i][j]=1;
                use[i][j+1]=1;
                use[i][j+2]=1;
            }
        }
    }
    cout << max(ans, ans2);
}

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