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답안 #537814

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
537814 2022-03-15T15:19:55 Z truc12a2cvp Soccer (JOI17_soccer) C++14
100 / 100
 412 ms 20708 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> II;
const int N = 5e2 + 5, M = 1e5 + 5;
const int MOD = 1e9 + 7;
const ll INF = 1e18;

int h, w, a, b, c, dirs[5] = {0, 1, 0, -1, 0}, n, s[M], t[M];
ll dist[N][N][5], near[N][N];

inline bool inside(int x, int y){
       return x >= 0 && x <= h && y >= 0 && y <= w;
}

void multiBFS(){
       for(int i = 0; i <= h; i ++){
              for(int j = 0; j <= w; j ++) near[i][j] = -1;
       }
       queue<II> qu;
       for(int i = 1; i <= n; i ++) near[s[i]][t[i]] = 0, qu.push(II(s[i], t[i]));
       while(!qu.empty()){
              int x = qu.front().first, y = qu.front().second;
              qu.pop();
              for(int i = 0; i < 4; i ++){
                     int nx = x + dirs[i], ny = y + dirs[i + 1];
                     if(inside(nx, ny) && near[nx][ny] == -1){
                            near[nx][ny] = near[x][y] + c;
                            qu.push(II(nx, ny));
                     }
              }
       }
}

struct pack{
       ll du;
       int x, y, lab;
       pack(ll _du = 0, int _x = 0, int _y = 0, int _lab = 0) : du(_du), x(_x), y(_y), lab(_lab) {}
       bool operator > (const pack& op) const{
              return du > op.du;
       }
};

void Dijkstra(){
       for(int i = 0; i <= h; i ++) for(int j = 0; j <= w; j ++) for(int k = 0; k < 5; k ++) dist[i][j][k] = INF;
       dist[s[1]][t[1]][4] = 0;
       priority_queue<pack, vector<pack>, greater<pack>> pq;
       pq.push(pack(0, s[1], t[1], 4));
       while(!pq.empty()){
              ll du = pq.top().du;
              int x = pq.top().x, y = pq.top().y, lab = pq.top().lab;
              pq.pop();
              if(du != dist[x][y][lab]) continue;
              if(lab != 4){
                     int nx = x + dirs[lab], ny = y + dirs[lab + 1];
                     if(inside(nx, ny) && dist[nx][ny][lab] > du + a){
                            dist[nx][ny][lab] = du + a;
                            pq.push(pack(du + a, nx, ny, lab));
                     }
                     if(dist[x][y][4] > du + near[x][y]){
                            dist[x][y][4] = du + near[x][y];
                            pq.push(pack(dist[x][y][4], x, y, 4));
                     }
              }
              else{
                     for(int i = 0; i < 4; i ++){
                            int nx = x + dirs[i], ny = y + dirs[i + 1];
                            if(!inside(nx, ny)) continue;
                            if(dist[nx][ny][4] > du + c){
                                   dist[nx][ny][4] = du + c;
                                   pq.push(pack(du + c, nx, ny, 4));
                            }
                            if(dist[nx][ny][i] > du + a + b){
                                   dist[nx][ny][i] = du + a + b;
                                   pq.push(pack(du + a + b, nx, ny, i));
                            }
                     }
              }
       }
       cout << dist[s[n]][t[n]][4];
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> h >> w >> a >> b >> c >> n;
    for(int i = 1; i <= n; i ++) cin >> s[i] >> t[i];
    multiBFS();
    Dijkstra();
    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 6736 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 273 ms 18448 KB Output is correct
4 Correct 307 ms 18496 KB Output is correct
5 Correct 43 ms 6912 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 317 ms 18544 KB Output is correct
2 Correct 314 ms 18468 KB Output is correct
3 Correct 226 ms 16132 KB Output is correct
4 Correct 223 ms 18492 KB Output is correct
5 Correct 231 ms 18460 KB Output is correct
6 Correct 252 ms 18528 KB Output is correct
7 Correct 322 ms 18572 KB Output is correct
8 Correct 294 ms 18540 KB Output is correct
9 Correct 315 ms 18684 KB Output is correct
10 Correct 39 ms 7540 KB Output is correct
11 Correct 304 ms 18660 KB Output is correct
12 Correct 318 ms 18560 KB Output is correct
13 Correct 185 ms 16072 KB Output is correct
14 Correct 317 ms 18632 KB Output is correct
15 Correct 237 ms 18456 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 63 ms 6736 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 273 ms 18448 KB Output is correct
4 Correct 307 ms 18496 KB Output is correct
5 Correct 43 ms 6912 KB Output is correct
6 Correct 317 ms 18544 KB Output is correct
7 Correct 314 ms 18468 KB Output is correct
8 Correct 226 ms 16132 KB Output is correct
9 Correct 223 ms 18492 KB Output is correct
10 Correct 231 ms 18460 KB Output is correct
11 Correct 252 ms 18528 KB Output is correct
12 Correct 322 ms 18572 KB Output is correct
13 Correct 294 ms 18540 KB Output is correct
14 Correct 315 ms 18684 KB Output is correct
15 Correct 39 ms 7540 KB Output is correct
16 Correct 304 ms 18660 KB Output is correct
17 Correct 318 ms 18560 KB Output is correct
18 Correct 185 ms 16072 KB Output is correct
19 Correct 317 ms 18632 KB Output is correct
20 Correct 237 ms 18456 KB Output is correct
21 Correct 55 ms 7128 KB Output is correct
22 Correct 368 ms 18524 KB Output is correct
23 Correct 348 ms 14388 KB Output is correct
24 Correct 369 ms 15612 KB Output is correct
25 Correct 334 ms 18504 KB Output is correct
26 Correct 331 ms 18732 KB Output is correct
27 Correct 134 ms 14072 KB Output is correct
28 Correct 163 ms 14848 KB Output is correct
29 Correct 312 ms 17312 KB Output is correct
30 Correct 147 ms 14044 KB Output is correct
31 Correct 329 ms 18532 KB Output is correct
32 Correct 412 ms 20708 KB Output is correct
33 Correct 275 ms 18492 KB Output is correct
34 Correct 386 ms 18620 KB Output is correct
35 Correct 141 ms 14668 KB Output is correct