oj.uz

Submission #467242

# Submission time Handle Problem Language Result Execution time Memory
467242 2021-08-22T08:23:24 Z Stickfish Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 112 ms 3564 KB 
    #include <iostream>
    #include <complex>
    #include <set>
    using namespace std;
     
    const complex<int> IMAG(0, 1);
    const int MAXN = 501;
    const int INF = 1e9;
    complex<int> f[MAXN][MAXN];
    int dp[MAXN][MAXN];
     
    bool operator<(const complex<int>& c1, const complex<int>& c2){
    	return c1.real() < c2.real() || c1.real() == c2.real() && c1.imag() < c2.imag();
    }
     
    struct ccomporator{
    	bool operator()(const pair<int, complex<int>> p1, const pair<int, complex<int>> p2) const {
    		if(p1.first < p2.first)
    			return true;
    		if(p1.first > p2.first)
    			return false;
    		if(p1.second.real() < p2.second.real())
    			return true;
    		if(p1.second.real() > p2.second.real())
    			return false;
    		if(p1.second.imag() < p2.second.imag())
    			return true;
    		return false;
     
    	}
    };
     
     
    signed main(){
    	int n, m;
    	cin >> n >> m;
    	for(int i = 0; i < n; ++i){
    		for(int j = 0; j < m; ++j){
    			char c;
    			cin >> c;
    			if(c == 'E'){
    				f[i][j] = IMAG;
    			} else if(c == 'N'){
    				f[i][j] = -1;
    			} else if(c == 'S'){
    				f[i][j] = 1;
    			} else if(c == 'W'){
    				f[i][j] = -IMAG;
    			} else {
    				f[i][j] = 0;
    			}
    			dp[i][j] = INF;
    		}
    	}
    	dp[0][0] = 0;
    	set<pair<int, complex<int>>, ccomporator> st;
    	st.insert({0, 0});
    	while(st.size()){
    		complex<int> pt = st.begin()->second;
    		st.erase(st.begin());
    		for(complex<int> timer = 0, mv = f[pt.real()][pt.imag()]; timer != 4; timer += 1, mv *= -IMAG){
    			complex<int> npt = pt + mv;
    			if(0 <= npt.real() && npt.real() < n && 0 <= npt.imag() && npt.imag() < m && dp[npt.real()][npt.imag()] > dp[pt.real()][pt.imag()]){
    				st.erase({dp[npt.real()][npt.imag()], npt});
    				dp[npt.real()][npt.imag()] = min(dp[npt.real()][npt.imag()], dp[pt.real()][pt.imag()] + timer.real());
    				st.insert({dp[npt.real()][npt.imag()], npt});
    			}
    		}
    	}
    	if(dp[n - 1][m - 1] == INF){
    		cout << -1 << endl;
    	} else {
    		cout << dp[n - 1][m - 1] << endl;
    	}
    }

Compilation message

adventure.cpp: In function 'bool operator<(const std::complex<int>&, const std::complex<int>&)':
adventure.cpp:13:61: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   13 |      return c1.real() < c2.real() || c1.real() == c2.real() && c1.imag() < c2.imag();
      |                                      ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 2 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 2 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 2 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 300 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 10 ms 664 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 12 ms 972 KB Output is correct
38 Correct 4 ms 1852 KB Output is correct
39 Correct 110 ms 3492 KB Output is correct
40 Correct 110 ms 3448 KB Output is correct
41 Correct 20 ms 3384 KB Output is correct
42 Correct 112 ms 3564 KB Output is correct
43 Correct 91 ms 3392 KB Output is correct
44 Correct 20 ms 3376 KB Output is correct