Submission #248928

#	Time	Username	Problem	Language	Result	Execution time	Memory
248928		pit4h	Soccer (JOI17_soccer)	C++14	35 / 100	2438 ms	262148 KiB

soccer

#include<iostream>
#include<math.h>
#include<algorithm>
#include<vector>
#include<queue>

using ll = long long;
using namespace std;

const int H=502, N=1e5+2;
const ll INF = 1e12+1;
int h, w, n, s[N], t[N];
ll a, b, c;
bool player[H][H];

ll closest[H][H];
ll minX[H][H], maxX[H][H];

bool vis[H][H];
ll dist[H][H];
struct Obj {
	ll d;
	int x, y;
	
	friend bool operator<(const Obj& o1, const Obj& o2) {
		return o1.d > o2.d;	
	}
};

vector<int> moveX = {0, 0, 1, -1}, moveY = {1, -1, 0, 0};

bool inside(int x, int y) {
	if(x>=1 && x<=h && y>=1 && y<=w) return true;
	return false;
}
int main() {
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	
	cin>>h>>w;
	cin>>a>>b>>c;
	cin>>n;
	h++;
	w++;

	for(int i=0; i<n; ++i) { 
		cin>>s[i]>>t[i];	
		s[i]++;
		t[i]++;
		player[s[i]][t[i]] = 1;
	}

	for(int i=1; i<=w; ++i) {
		maxX[0][i] = -INF;
	}
	for(int x=1; x<=h; ++x) {
		for(int y=1; y<=w; ++y) {
			if(player[x][y]) maxX[x][y] = x;
			else maxX[x][y] = maxX[x-1][y];
		}
	}

	for(int i=1; i<=w; ++i) {	
		minX[h+1][i] = INF;
	}
	for(int x=h; x>=1; --x) {
		for(int y=1; y<=w; ++y) {
			if(player[x][y]) minX[x][y] = x;
			else minX[x][y] = minX[x+1][y];
		}
	}

	for(int x=1; x<=h; ++x) {
		for(int y=1; y<=w; ++y) {
			closest[x][y] = INF;
			for(int i=1; i<=w; ++i) {
				closest[x][y] = min(closest[x][y], abs(y-i) + min( x - maxX[x][i], minX[x][i] - x));
			}
		}
	}

	for(int i=1; i<=h; ++i) {
		for(int j=1; j<=w; ++j) {
			dist[i][j] = INF;
		}
	}
	
	priority_queue< Obj > Q;
	Q.push({0, s[0], t[0]});
	dist[s[0]][t[0]] = 0;

	while(Q.size()) {
		auto cur = Q.top();
		Q.pop();
		ll d = cur.d;
		int x = cur.x;
		int y = cur.y;
		if(vis[x][y]) continue;
		vis[x][y] = 1;
		
		// C
		for(int i=0; i<4; ++i) {
			int nx = x+moveX[i], ny = y+moveY[i];
			if(inside(nx, ny) && d + c < dist[nx][ny]) {
				dist[nx][ny] = d + c;
				Q.push({d+c, nx, ny});
			}
		}

		//Ax + B
		for(int i=0; i<4; ++i) {
			for(int p=1; p<=max(h, w); ++p) {
				int nx = x+p*moveX[i], ny = y+p*moveY[i];
				if(!inside(nx, ny)) continue;
				ll nd = d + a*p + b + c * closest[nx][ny];
				if(nd < dist[nx][ny]) {
					dist[nx][ny] = nd;
					Q.push({nd, nx, ny});
				}
			}
		}
			
	}
	
	cout<<dist[s[n-1]][t[n-1]];
}

• Subtask 1: 5 / 5
• Subtask 2: 30 / 30
• Subtask 3: 0 / 65