Submission #822758

#	Time	Username	Problem	Language	Result	Execution time	Memory
822758		Minindu206	Memory (IOI10_memory)	C++14	Compilation error	0 ms	0 KiB

memory

#include <bits/stdc++.h>
using namespace std;
void init()
{
#ifndef ONLINE_JUDGE
    freopen("input.in", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
}
int n, m, k;
void bfs(vector<string> &arr)
{
    queue<pair<int, int>> q;
    q.push({0, 0});
    vector<pair<int, int>> dir{{1, 0}, {0, 1}, {-1, 0}, {0, -1}};
    while (!q.empty())
    {
        int x = q.front().first;
        int y = q.front().second;
        q.pop();
        arr[x][y] = 'O';
        for (pair<int, int> p : dir)
        {
            int cx = x + p.first;
            int cy = y + p.second;

            if (cx < 0 || cy < 0 || cx >= n || cy >= m)
                continue;
            if(arr[cx][cy] != '.')
                continue;
            q.push({cx, cy});
        }
    }
}
int main()
{
    init();
    cin >> n >> m >> k;
    string a(m, '.');
    string b(m, 'X');
    vector<string> arr(n);
    for (int i = 0; i < n; i++)
    {
        cin >> arr[i];
    }
    bfs(arr);
    for (int i = 0; i < n; i++)
        cout << arr[i] << "\n";
}

Compilation message (stderr)

memory.cpp: In function 'void init()':
memory.cpp:6:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    6 |     freopen("input.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
memory.cpp:7:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccTjMDES.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc9fODeW.o:memory.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccTjMDES.o: in function `main':
grader.cpp:(.text.startup+0x2f): undefined reference to `play()'
collect2: error: ld returned 1 exit status