oj.uz

Submission #973515

# Submission time Handle Problem Language Result Execution time Memory
973515 2024-05-02T06:17:58 Z njoop Portals (BOI14_portals) C++17
100 / 100
 187 ms 42560 KB 
    #include <bits/stdc++.h>
    #pragma GCC optimize("O3,unroll-loops")
    #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
    #define ti tuple<int, int, int>
    using namespace std;
     
    int r, c, dp[1010][1010], stx, sty, enx, eny, cx, cy, cdi, mn[1010][1010];
    int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
    char arr[1010][1010];
    pair<int, int> dir[4][1010][1010], cur;
    priority_queue<ti, vector<ti>, greater<ti>> pq;
     
    int main() {
        cin.tie(0)->sync_with_stdio(0);
        cin >> r >> c;
        for(int i=0; i<1010; i++) for(int j=0; j<1010; j++) arr[i][j] = '#';
        for(int i=1; i<=r; i++) {
            for(int j=1; j<=c; j++) {
                cin >> arr[i][j];
                if(arr[i][j] == 'S') {
                    stx = i;
                    sty = j;
                }
                if(arr[i][j] == 'C') {
                    enx = i;
                    eny = j;
                }
                dp[i][j] = 1e9;
            }
        }
        for(int j=0; j<=c+1; j++) {
            for(int i=0; i<=r+1; i++) {
                if(arr[i][j] == '#') cur = {i+1, j};
                dir[0][i][j] = cur;
            }
        }
        for(int i=0; i<=r+1; i++) {
            for(int j=0; j<=c+1; j++) {
                if(arr[i][j] == '#') cur = {i, j+1};
                dir[1][i][j] = cur;
            }
        }
        for(int j=0; j<=c+1; j++) {
            for(int i=r+1; i>=0; i--) {
                if(arr[i][j] == '#') cur = {i-1, j};
                dir[2][i][j] = cur;
            }
        }
        for(int i=0; i<=r+1; i++) {
            for(int j=c+1; j>=0; j--) {
                if(arr[i][j] == '#') cur = {i, j-1};
                dir[3][i][j] = cur;
            }
        }
        for(int i=1; i<=r; i++) {
            for(int j=1; j<=c; j++) {
                mn[i][j] = 1e9;
                for(int k=0; k<4; k++) {
                    mn[i][j] = min(mn[i][j], abs(dir[k][i][j].first-i) + abs(dir[k][i][j].second-j));
                }
            }
        }
        pq.push({0, stx, sty});
        while(pq.size()) {
            cdi = get<0>(pq.top());
            cx = get<1>(pq.top());
            cy = get<2>(pq.top());
            pq.pop();
            if(cx < 1 || cx > r || cy < 1 || cy > c || arr[cx][cy] == '#') continue;
            dp[cx][cy] = cdi;
            if(cx == enx && cy == eny) {
                cout << dp[enx][eny];
                return 0;
            }
            for(int i=0; i<4; i++) {
                if(dp[cx+dx[i]][cy+dy[i]] > cdi+1) {
                    pq.push({cdi+1, cx+dx[i], cy+dy[i]});
                    dp[cx+dx[i]][cy+dy[i]] = cdi+1;
                }
            }
            for(int i=0; i<4; i++) {
                if(dp[dir[i][cx][cy].first][dir[i][cx][cy].second] > cdi+mn[cx][cy]+1) {
                    pq.push({cdi+mn[cx][cy]+1, dir[i][cx][cy].first, dir[i][cx][cy].second});
                    dp[dir[i][cx][cy].first][dir[i][cx][cy].second] = cdi+mn[cx][cy]+1;
                }
            }
        }
        cout << dp[enx][eny];
        return 0;
    }

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10584 KB Output is correct
2 Correct 1 ms 10588 KB Output is correct
3 Correct 1 ms 10588 KB Output is correct
4 Correct 2 ms 10588 KB Output is correct
5 Correct 1 ms 10588 KB Output is correct
6 Correct 2 ms 10588 KB Output is correct
7 Correct 1 ms 10588 KB Output is correct
8 Correct 1 ms 10588 KB Output is correct
9 Correct 1 ms 10588 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10588 KB Output is correct
2 Correct 2 ms 10588 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 1 ms 10588 KB Output is correct
5 Correct 2 ms 10588 KB Output is correct
6 Correct 2 ms 10588 KB Output is correct
7 Correct 1 ms 10588 KB Output is correct
8 Correct 1 ms 10704 KB Output is correct
9 Correct 3 ms 19032 KB Output is correct
10 Correct 3 ms 19032 KB Output is correct
11 Correct 3 ms 18776 KB Output is correct
12 Correct 3 ms 18780 KB Output is correct
13 Correct 3 ms 19036 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 3 ms 18780 KB Output is correct
16 Correct 1 ms 10588 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10588 KB Output is correct
2 Correct 1 ms 10584 KB Output is correct
3 Correct 1 ms 10588 KB Output is correct
4 Correct 2 ms 10588 KB Output is correct
5 Correct 7 ms 23132 KB Output is correct
6 Correct 10 ms 23132 KB Output is correct
7 Correct 8 ms 23132 KB Output is correct
8 Correct 4 ms 23148 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10784 KB Output is correct
2 Correct 1 ms 10588 KB Output is correct
3 Correct 1 ms 10588 KB Output is correct
4 Correct 2 ms 10584 KB Output is correct
5 Correct 2 ms 10588 KB Output is correct
6 Correct 2 ms 10588 KB Output is correct
7 Correct 1 ms 10588 KB Output is correct
8 Correct 1 ms 10588 KB Output is correct
9 Correct 3 ms 19036 KB Output is correct
10 Correct 3 ms 19036 KB Output is correct
11 Correct 3 ms 18900 KB Output is correct
12 Correct 3 ms 19024 KB Output is correct
13 Correct 3 ms 19036 KB Output is correct
14 Correct 8 ms 23136 KB Output is correct
15 Correct 8 ms 23144 KB Output is correct
16 Correct 7 ms 23132 KB Output is correct
17 Correct 8 ms 23128 KB Output is correct
18 Correct 8 ms 23132 KB Output is correct
19 Correct 4 ms 23132 KB Output is correct
20 Correct 6 ms 23132 KB Output is correct
21 Correct 7 ms 23132 KB Output is correct
22 Correct 8 ms 23132 KB Output is correct
23 Correct 8 ms 23132 KB Output is correct
24 Correct 7 ms 23132 KB Output is correct
25 Correct 1 ms 10588 KB Output is correct
26 Correct 2 ms 18776 KB Output is correct
27 Correct 1 ms 10588 KB Output is correct
28 Correct 4 ms 23132 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10588 KB Output is correct
2 Correct 1 ms 10588 KB Output is correct
3 Correct 1 ms 10584 KB Output is correct
4 Correct 1 ms 10588 KB Output is correct
5 Correct 2 ms 10584 KB Output is correct
6 Correct 1 ms 10588 KB Output is correct
7 Correct 2 ms 10588 KB Output is correct
8 Correct 1 ms 10768 KB Output is correct
9 Correct 3 ms 19036 KB Output is correct
10 Correct 3 ms 19036 KB Output is correct
11 Correct 3 ms 18780 KB Output is correct
12 Correct 3 ms 18780 KB Output is correct
13 Correct 3 ms 19036 KB Output is correct
14 Correct 9 ms 23140 KB Output is correct
15 Correct 9 ms 23132 KB Output is correct
16 Correct 7 ms 23132 KB Output is correct
17 Correct 7 ms 23132 KB Output is correct
18 Correct 8 ms 23132 KB Output is correct
19 Correct 5 ms 23132 KB Output is correct
20 Correct 7 ms 23136 KB Output is correct
21 Correct 8 ms 23132 KB Output is correct
22 Correct 9 ms 23132 KB Output is correct
23 Correct 8 ms 23132 KB Output is correct
24 Correct 163 ms 41408 KB Output is correct
25 Correct 187 ms 41556 KB Output is correct
26 Correct 34 ms 42324 KB Output is correct
27 Correct 105 ms 42332 KB Output is correct
28 Correct 119 ms 42276 KB Output is correct
29 Correct 142 ms 42316 KB Output is correct
30 Correct 133 ms 42560 KB Output is correct
31 Correct 7 ms 23128 KB Output is correct
32 Correct 163 ms 42324 KB Output is correct
33 Correct 1 ms 10588 KB Output is correct
34 Correct 3 ms 19036 KB Output is correct
35 Correct 115 ms 42320 KB Output is correct
36 Correct 1 ms 10588 KB Output is correct
37 Correct 4 ms 23132 KB Output is correct
38 Correct 49 ms 42308 KB Output is correct
39 Correct 127 ms 42332 KB Output is correct