oj.uz

Submission #436912

# Submission time Handle Problem Language Result Execution time Memory
436912 2021-06-25T08:56:29 Z qwerasdfzxcl Sandwich (JOI16_sandwich) C++14
35 / 100
 353 ms 262148 KB 
#include <bits/stdc++.h>

typedef long long ll;
using namespace std;
char matrix[404][404];
int visited[404][404][2];
int dp[404][404][2], dx[4] = {-1, 1, 0, 0}, dy[4] = {0, 0, 1, -1}, n, m, deg[404][404][2];
vector<pair<short, short>> col[404][404][2];

bool valid(int x, int y){
    return ((1<=x && x<=n) && (1<=y && y<=m));
}
/*
int count_visited(){
    int ret = 0;
    for (int i=1;i<=n;i++){
        for (int j=1;j<=m;j++) if (visited[i][j][0] || visited[i][j][1]) ret++;
    }
    return ret;
}*/

vector<pair<short, short>> combine(vector<pair<short, short>> &X, vector<pair<short, short>> &Y){
    vector<pair<short, short>> ret(n+1);
    for (int i=1;i<=n;i++){
        if (X[i].first==m || Y[i].first==m) ret[i].first = ret[i].second = m;
        else{
            ret[i].first = max(X[i].first, Y[i].first);
            ret[i].second = max(X[i].second, Y[i].second);
            if (ret[i].first+ret[i].second>=m) ret[i].first = ret[i].second = m;
        }
    }
    return ret;
}

int calc(int x, int y, int c){
    int ret = 0;
    for (int i=1;i<=n;i++){
        if (col[x][y][c][i].first==m) ret += m;
        else ret += col[x][y][c][i].first+col[x][y][c][i].second;
    }
    return ret;
}

bool dfs(int x, int y, int c){
    if (visited[x][y][c]) return (visited[x][y][c]==1e9 && dp[x][y][c]!=1e9);
    visited[x][y][c] = c+1;

    bool ret = 1;
    vector<pair<short, short>> tmp1(n+1), tmp2(n+1);
    int nx1 = x+dx[c], nx2 = y+dy[c];
    if (valid(nx1, nx2)){
        ret &= dfs(nx1, nx2, c);
        tmp1 = col[nx1][nx2][c];
        deg[nx1][nx2][c]++;
        if (deg[nx1][nx2][c]==2) vector<pair<short, short>>().swap(col[nx1][nx2][c]);
    }
    int d = 2;
    if (!c && matrix[x][y]=='Z') d = 3;
    if (c && matrix[x][y]=='N') d = 3;
    int nx3 = x+dx[d], nx4 = y+dy[d];
    if (valid(nx3, nx4)){
        if (d==2 && matrix[nx3][nx4]=='N'){
            ret &= dfs(nx3, nx4, 0);
            tmp2 = col[nx3][nx4][0];
            deg[nx3][nx4][0]++;
            if (deg[nx3][nx4][0]==2) vector<pair<short, short>>().swap(col[nx3][nx4][0]);
        }
        else if (d==3 && matrix[nx3][nx4]=='Z'){
             ret &= dfs(nx3, nx4, 0);
             tmp2 = col[nx3][nx4][0];
             deg[nx3][nx4][0]++;
            if (deg[nx3][nx4][0]==2) vector<pair<short, short>>().swap(col[nx3][nx4][0]);
        }
        else{
            ret &= dfs(nx3, nx4, 1);
            tmp2 = col[nx3][nx4][1];
            deg[nx3][nx4][1]++;
            if (deg[nx3][nx4][1]==2) vector<pair<short, short>>().swap(col[nx3][nx4][1]);
        }
    }
    visited[x][y][c] = 1e9;
    if (ret){
        col[x][y][c] = combine(tmp1, tmp2);
        if (d==2) col[x][y][c][x].second = m+1-y;
        else col[x][y][c][x].first = y;
        if (col[x][y][c][x].first+col[x][y][c][x].second==m) col[x][y][c][x].first = col[x][y][c][x].second = m;
        dp[x][y][c] = calc(x, y, c);
    }
    return ret;
}

int main(){
    scanf("%d %d", &n, &m);
    for (int i=1;i<=n;i++){
        scanf("%s", matrix[i]+1);
        for (int j=1;j<=m;j++) dp[i][j][0] = dp[i][j][1] = 1e9;
    }
    for (int i=1;i<=n;i++){
        for (int j=1;j<=m;j++){
            for (int k=0;k<2;k++) if (!visited[i][j][k]) dfs(i, j, k);
        }
    }
    for (int i=1;i<=n;i++){
        for (int j=1;j<=m;j++){
            int ans = min(dp[i][j][0], dp[i][j][1]);
            if (ans==1e9) ans = -1;
            else ans <<= 1;
            printf("%d ", ans);
        }
        printf("\n");
    }
    return 0;
}

Compilation message

sandwich.cpp: In function 'int main()':
sandwich.cpp:93:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   93 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
sandwich.cpp:95:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   95 |         scanf("%s", matrix[i]+1);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7884 KB Output is correct
2 Correct 6 ms 7884 KB Output is correct
3 Correct 7 ms 8400 KB Output is correct
4 Correct 5 ms 7884 KB Output is correct
5 Correct 6 ms 8524 KB Output is correct
6 Correct 9 ms 10720 KB Output is correct
7 Correct 9 ms 8524 KB Output is correct
8 Correct 9 ms 8524 KB Output is correct
9 Correct 8 ms 8472 KB Output is correct
10 Correct 10 ms 8596 KB Output is correct
11 Correct 9 ms 8632 KB Output is correct
12 Correct 7 ms 8396 KB Output is correct
13 Correct 10 ms 8860 KB Output is correct
14 Correct 10 ms 9036 KB Output is correct
15 Correct 10 ms 8496 KB Output is correct
16 Correct 9 ms 8524 KB Output is correct
17 Correct 10 ms 8524 KB Output is correct
18 Correct 12 ms 8524 KB Output is correct
19 Correct 13 ms 8524 KB Output is correct
20 Correct 9 ms 8524 KB Output is correct
21 Correct 9 ms 8524 KB Output is correct
22 Correct 9 ms 8536 KB Output is correct
23 Correct 9 ms 8524 KB Output is correct
24 Correct 10 ms 8652 KB Output is correct
25 Correct 12 ms 8700 KB Output is correct
26 Correct 9 ms 8524 KB Output is correct
27 Correct 12 ms 8444 KB Output is correct
28 Correct 10 ms 8524 KB Output is correct

Subtask #2
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7884 KB Output is correct
2 Correct 6 ms 7884 KB Output is correct
3 Correct 7 ms 8400 KB Output is correct
4 Correct 5 ms 7884 KB Output is correct
5 Correct 6 ms 8524 KB Output is correct
6 Correct 9 ms 10720 KB Output is correct
7 Correct 9 ms 8524 KB Output is correct
8 Correct 9 ms 8524 KB Output is correct
9 Correct 8 ms 8472 KB Output is correct
10 Correct 10 ms 8596 KB Output is correct
11 Correct 9 ms 8632 KB Output is correct
12 Correct 7 ms 8396 KB Output is correct
13 Correct 10 ms 8860 KB Output is correct
14 Correct 10 ms 9036 KB Output is correct
15 Correct 10 ms 8496 KB Output is correct
16 Correct 9 ms 8524 KB Output is correct
17 Correct 10 ms 8524 KB Output is correct
18 Correct 12 ms 8524 KB Output is correct
19 Correct 13 ms 8524 KB Output is correct
20 Correct 9 ms 8524 KB Output is correct
21 Correct 9 ms 8524 KB Output is correct
22 Correct 9 ms 8536 KB Output is correct
23 Correct 9 ms 8524 KB Output is correct
24 Correct 10 ms 8652 KB Output is correct
25 Correct 12 ms 8700 KB Output is correct
26 Correct 9 ms 8524 KB Output is correct
27 Correct 12 ms 8444 KB Output is correct
28 Correct 10 ms 8524 KB Output is correct
29 Correct 5 ms 8012 KB Output is correct
30 Correct 11 ms 13260 KB Output is correct
31 Runtime error 353 ms 262148 KB Execution killed with signal 9
32 Halted 0 ms 0 KB -