Submission #906261

#	Time	Username	Problem	Language	Result	Execution time	Memory
906261		StillOnQiCondensation	Tracks in the Snow (BOI13_tracks)	C++14	2.19 / 100	244 ms	33492 KiB

tracks

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
#define all(x) (x).begin(), (x).end()
#define inf 1000000007
#define llmax LLONG_MAX
#define pi 3.141592653589793238462643383279502884197169399
 
long long binpow(long long a, long long b) {
    long long res = 1;
    while (b > 0) {
        if (b & 1)
            res = res * a;
        a = a * a;
        b >>= 1;
    }
    return res;
}
ll ncr(int n, int r)
{
    if (n < r) return 0;
    long long p = 1, k = 1;
    if (n - r < r)
        r = n - r;
    if (r != 0) {
        while (r) {
            p *= n;
            k *= r;
            long long m = __gcd(p, k);
            p /= m;
            k /= m;
            n--;
            r--;
        }
    }
    else
        p = 1;
    return p;
}

vector <ll> vcreate(int n){
    vector <ll> v(n);
    for (int i = 0; i < n; i++)
    {
        cin>>v[i];
    }
    return v;
}


const int MOD=998244353;

ll ModExp(ll x, ll n, ll m) {
	assert(n >= 0);
	x %= m;  // note: m * m must be less than 2^63 to avoid ll overflow
	ll res = 1;
	while (n > 0) {
		if (n % 2 == 1) { res = res * x % m; }
		x = x * x % m;
		n /= 2;
	}
	return res;
}
char grid[4500][4500];

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout); 

   /*  ll T; cin>>T;
    for(ll i=0; i<T; i++)
    {
           
    } */

    
    int n{},m{};
   
    cin>>n>>m;
    
    
    int ans{0};
    set<char> s;
    for(int i{0}; i<n; i++)
    {
        for(int j{0}; j<m; j++)
        {
            cin>>grid[i][j];
            s.insert(grid[i][j]);
        
        }
    }

    if(s.size()==3) cout<<2<<endl;
    else cout<<1<<endl;

    
}

Compilation message (stderr)

tracks.cpp: In function 'int main()':
tracks.cpp:88:9: warning: unused variable 'ans' [-Wunused-variable]
   88 |     int ans{0};
      |         ^~~

• Subtask 1: 0 / 30
• Subtask 2: 2.1875 / 70