Submission #675551

#	Time	Username	Problem	Language	Result	Execution time	Memory
675551		QwertyPi	OBELISK (NOI14_obelisk)	C++14	25 / 25	117 ms	1356 KiB

obelisk

#include <bits/stdc++.h>
#define int long long
using namespace std;

struct point{
	int x, y;
};

int K, m;
int dis(point a, point b){
	point d {abs(a.x - b.x), abs(a.y - b.y)};
	if(m == 1) return d.x + d.y;
	bool x1 = d.x % (m + 1), y1 = d.y % (m + 1);
	int v_x = d.x / (m + 1) * (m + 1), v_y = d.y / (m + 1) * (m + 1);
	int ans = 1LL << 60;
	for(auto p : vector<point>{{v_x, v_y}, {v_x, v_y + (m + 1)}, {v_x + (m + 1), v_y}, {v_x + (m + 1), v_y + (m + 1)}}){
		int res = p.x / (m + 1) * 2 + p.y / (m + 1) * 2;
		res += abs(p.x - d.x) != 0 && p.y == 0 ? 2 + abs(p.x - d.x) : abs(p.x - d.x);
		res += abs(p.y - d.y) != 0 && p.x == 0 ? 2 + abs(p.y - d.y) : abs(p.y - d.y);
		ans = min(ans, res);
	}
	return ans;
}

int dp[501][101];
vector<point> layers[501];
int32_t main(){
	cin >> K >> m;
	int s_x, s_y, e_x, e_y;
	cin >> s_x >> s_y >> e_x >> e_y;
	point s {s_x, s_y}, e {e_x, e_y};
	layers[0].push_back(s);
	for(int i = 1; i < K; i++){
		int l; cin >> l;
		for(int j = 0; j < l; j++){
			int x, y; cin >> x >> y;
			layers[i].push_back({x, y});
		}
	}
	layers[K].push_back(e);
	
	memset(dp, 0x3f, sizeof(dp));
	dp[0][0] = 0;
	for(int i = 0; i < K; i++){
		for(int j = 0; j < layers[i].size(); j++){
			for(int k = 0; k < layers[i + 1].size(); k++){
				dp[i + 1][k] = min(dp[i + 1][k], dp[i][j] + dis(layers[i][j], layers[i + 1][k]));
			}
		}
	}
	cout << dp[K][0] << endl;
}

Compilation message (stderr)

obelisk.cpp: In function 'long long int dis(point, point)':
obelisk.cpp:13:7: warning: unused variable 'x1' [-Wunused-variable]
   13 |  bool x1 = d.x % (m + 1), y1 = d.y % (m + 1);
      |       ^~
obelisk.cpp:13:27: warning: unused variable 'y1' [-Wunused-variable]
   13 |  bool x1 = d.x % (m + 1), y1 = d.y % (m + 1);
      |                           ^~
obelisk.cpp: In function 'int32_t main()':
obelisk.cpp:45:20: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |   for(int j = 0; j < layers[i].size(); j++){
      |                  ~~^~~~~~~~~~~~~~~~~~
obelisk.cpp:46:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |    for(int k = 0; k < layers[i + 1].size(); k++){
      |                   ~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 6 / 6
• Subtask 4: 7 / 7