Submission #1050338

#	Time	Username	Problem	Language	Result	Execution time	Memory
1050338		vjudge1	Dango Maker (JOI18_dango_maker)	C++17	0 / 100	0 ms	348 KiB

dango_maker

#include <bits/stdc++.h>
#define f first
#define s second
using namespace std;
int n, m;
vector<pair<int ,int>> v;int mx=0;
void b(string * s, int sh, int p, bool ch){
    if(p==v.size()){
        mx=max(mx, sh);
        return;
    }
    int x=v[p].f, y=v[p].s;
    if(y<m-2){
        if(s[x][y+1]=='G'&&s[x][y+2]=='W'){
            if(ch==0){
                b(s, sh+1, p+1, ch);return;
            }else{
                if(x>0){
                    if(!(x<n-1&&s[x-1][y+1]=='R'&&s[x+1][y+1]=='W')&&!(x>2&&s[x-2][y+2]=='R'&&s[x-1][y+2]=='G')){
                        b(s, sh+1, p+1, ch);return;
                    }
                }else{
                    b(s, sh+1, p+1, ch);return;
                }
            }
        }
    }
    if(x<n-2){
        if(s[x+1][y]=='G'&&s[x+2][y]=='W'){
            if(ch==1){
                b(s, sh+1, p+1, ch);return;
            }else{
                if(y>0){
                    if(!(y<m-1&&s[x+1][y-1]=='R'&&s[x+1][y+1]=='W')&&!(y>2&&s[x+2][y-2]=='R'&&s[x+2][y-1]=='G')){
                        b(s, sh+1, p+1, ch);return;
                    }
                }else{
                    b(s, sh+1, p+1, ch);return;
                }
            }
        }
    }
    b(s, sh, p+1, ch);
}
int main() {
    cin >> n >> m;
    string s[n];
    for(int i=0; i<n; i++){
        cin >> s[i];
        for(int j=0; j<m; j++){
            if(s[i][j]=='R'){
                v.push_back({i, j});
            }
        }
    }
    b(s, 0, 0, 0);
    b(s, 0, 0, 1);
    cout << mx;
    return 0;
}

Compilation message (stderr)

dango_maker.cpp: In function 'void b(std::string*, int, int, bool)':
dango_maker.cpp:8:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     if(p==v.size()){
      |        ~^~~~~~~~~~

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