Submission #393010

#	Time	Username	Problem	Language	Result	Execution time	Memory
393010		phathnv	Comparing Plants (IOI20_plants)	C++11	11 / 100	4091 ms	2097156 KiB

plants

#include <bits/stdc++.h>
#include "plants.h"

using namespace std;

vector<vector<bool>> d;

void init(int k, std::vector<int> r) {
    int n = r.size();
    vector<int> p(n, -1);
    d.assign(n, vector<bool>(n, 0));
    for(int val = n - 1; val >= 0; val--){
        for(int i = 0; i < n; i++){
            if (r[i] || r[i] == -1)
                continue;
            bool ok = 1;
            for(int j = 1; j < k; j++)
                ok &= (r[(i - j + n) % n] != 0);
            if (ok){
                p[i] = val;
                for(int j = 1; j < k; j++){
                    if (r[(i - j + n) % n] != -1){
                        r[(i - j + n) % n]--;
                        d[i][(i - j + n) % n] = 1;
                    }
                    if (r[(i + j) % n] != -1)
                        d[i][(i + j) % n] = 1;
                }
                r[i] = -1;
                break;
            }
        }
    }

    for(int k = 0; k < n; k++)
        for(int i = 0; i < n; i++)
            for(int j = 0; j < n; j++)
                d[i][j] = d[i][j] || (d[i][k] && d[k][j]);

	return;
}

int compare_plants(int x, int y) {
    if (d[x][y])
        return 1;
    if (d[y][x])
        return -1;
	return 0;
}

Compilation message (stderr)

plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:35:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   35 |     for(int k = 0; k < n; k++)
      |     ^~~
plants.cpp:40:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   40 |  return;
      |  ^~~~~~
plants.cpp: In function 'int compare_plants(int, int)':
plants.cpp:46:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   46 |     if (d[y][x])
      |     ^~
plants.cpp:48:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   48 |  return 0;
      |  ^~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 11 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25