Submission #534341

#	Time	Username	Problem	Language	Result	Execution time	Memory
534341		aadit_ambadkar	Tracks in the Snow (BOI13_tracks)	C++17	0 / 100	1144 ms	1039488 KiB

tracks

/*
    This code belongs to Aadit Ambadkar
    Date: 2022-03-07 21:34:47
    Problem: tis
*/
#include <bits/stdc++.h>
using namespace::std;

typedef long long ll;
#define F0R(i, n) for (int i = 0; i < n; i++)
#define R0F(i, n) for (int i = n-1; i >= 0; i--)
#define FOR(i, a, n) for (int i = a; i < n; i++)
#define pb push_back
#define fastio ios::sync_with_stdio(0); cin.tie(0)
#define MOD 1000000007
#define FF first
#define SS second

int n, m;
int board[4005][4005];
bool vis[4005][4005];
int cc = 0;
void dfs(int u, int v, int g) {
    if (vis[u][v]) return;
    vis[u][v]=true;
    if (board[u][v]==g) cc++;
    else return;
    if (u > 0) dfs(u-1, v, g);
    if (v > 0) dfs(u, v-1, g);
    if (u < n-1) dfs(u+1, v, g);
    if (v < m-1) dfs(u, v+1, g);
}

int main() {
    fastio;
    cin >> n >> m;
    string s;
    int cg = 0;
    F0R(i, n) {
        cin >> s;
        F0R(j, m) {
            if (s[i]=='F') board[i][j]=1;
            else if (s[i]=='R') board[i][j]=2;
            else board[i][j]==0;
            if (board[i][j]==board[0][0]) cg++;
        }
    }
    int v = board[0][0];
    dfs(0, 0, v);
    if (cc < cg) {
        cout << 3 << "\n";
    } else {
        cout << 2 << "\n";
    }
}

Compilation message (stderr)

tracks.cpp: In function 'int main()':
tracks.cpp:44:29: warning: statement has no effect [-Wunused-value]
   44 |             else board[i][j]==0;
      |                  ~~~~~~~~~~~^~~

• Subtask 1: 0 / 30
• Subtask 2: 0 / 70