oj.uz

Submission #15980

# Submission time Handle Problem Language Result Execution time Memory
15980 2015-08-04T09:47:01 Z gs14004 Cop and Robber (BOI14_coprobber) C++14
16 / 100
 834 ms 5568 KB 
#include "coprobber.h"
#include <cstdio>
#include <algorithm>
#include <queue>
#include <cstring>
using namespace std;
int indeg[500][500][2];
 
queue<int> qx, qy, qd;
bool vis[500][500][2];
int nxt[500][500];
int pos;
 
int start(int N, bool A[MAX_N][MAX_N])
{
    for (int i = 0; i < N; i++){
        for (int j = 0; j < N; j++){
            if (i == j) continue;
            indeg[i][j][1] = count(A[j], A[j] + N, true);
            indeg[i][j][0] = min((int)count(A[i], A[i] + N, true), 1);
        }
    } 
    for (int i = 0; i < N; i++){
        for (int k = 0; k < 2; k++){
            qx.push(i);
            qy.push(i);
            qd.push(k);
            vis[i][i][k] = 1;
        }
    }
    while (!qx.empty()){
        int xf = qx.front();
        int yf = qy.front();
        int df = qd.front();
        qx.pop(), qy.pop(), qd.pop();
        if (df == 1){
            for (int i = 0; i < N; i++){
                if (A[xf][i] && !vis[i][yf][0]){
                    indeg[i][yf][0]--;
                    if (indeg[i][yf][0] == 0){
                        qx.push(i);
                        qy.push(yf);
                        qd.push(0);
                        nxt[i][yf] = xf;
                        vis[i][yf][0] = 1;
                    }
                }
            }
        }
        else{
            for (int i = 0; i < N; i++){
                if (A[yf][i] &&!vis[xf][i][1]){
                    indeg[xf][i][1]--;
                    if (indeg[xf][i][1] == 0){
                        qx.push(xf);
                        qy.push(i);
                        qd.push(1);
                        vis[xf][i][1] = 1;
                    }
                }
            }
        }
    }
    for (int i = 0; i < N; i++){
        int fnd = 0;
        for (int j = 0; j < N; j++){
            if (!vis[i][j][0]){
                fnd = 1;
                break;
            }
        }
        if (!fnd) return pos = i;
    }
    return -1;
}
 
int nextMove(int R)
{
    return pos = nxt[pos][R];
}

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 754 ms 5148 KB Output is correct
5 Correct 94 ms 2680 KB Output is correct
6 Correct 802 ms 5568 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB Cop can catch the robber, but start() returned -1
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Incorrect 2 ms 384 KB Cop can catch the robber, but start() returned -1
5 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 750 ms 5148 KB Output is correct
5 Correct 93 ms 2688 KB Output is correct
6 Correct 834 ms 5456 KB Output is correct
7 Incorrect 2 ms 384 KB Cop can catch the robber, but start() returned -1
8 Halted 0 ms 0 KB -