Submission #254725

#	Time	Username	Problem	Language	Result	Execution time	Memory
254725		egekabas	Dango Maker (JOI18_dango_maker)	C++14	13 / 100	1 ms	384 KiB

dango_maker

#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<int, int> pii;
typedef pair<ld, ld> pld;
int n, m;
int a[3009][3009];
int cl(int x, int y){
    return(x >= 0 && y >= 0 && a[x][y] == 1 && a[x][y+1] == 2 && a[x][y+2] == 3);
}
int cd(int x, int y){
    return(x >= 0 && y >= 0 && a[x][y] == 1 && a[x+1][y] == 2 && a[x+2][y] == 3);
}
int ans = 0;
void fl(int x, int y){
    if(!cl(x, y)) return;
    ++ans;
    a[x][y] = a[x][y+1] = a[x][y+2] = 0;
}
void fd(int x, int y){
    if(!cd(x, y)) return;
    ++ans;
    a[x][y] = a[x+1][y] = a[x+2][y] = 0;
}
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    //freopen("in.txt", "r", stdin);
    //freopen("out.txt", "w", stdout);
    
    cin >> n >> m;
    string s;
    for(int i = 0; i < n; ++i){
        cin >> s;
        for(int j = 0; j < m; ++j){
            if(s[j] == 'R')
                a[i][j] = 1;
            else if(s[j] == 'G')
                a[i][j] = 2;
            else
                a[i][j] = 3;
        }
    }
    for(int i = 0; i < n; ++i)
        for(int j = 0; j < m; ++j){
            if(a[i][j] != 1) continue;
            int val1 = 0;
            int val2 = 0;
            vector<pii> v;
            for(int red = 0; red <= i && red <= j; ++red){
                if(a[i-red][j-red] != 1) break;
                v.pb({(i-red), (j-red)});
                val1 += cl((i-red), (j-red));
                val2 += cd((i-red), (j-red));
            }
            for(auto u : v){
                if(val1 > val2)
                    fl(u.ff, u.ss);
                else
                    fd(u.ff, u.ss);
                a[u.ff][u.ss] = 0;
            }
        }
    cout << ans << '\n';
}

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