Submission #959678

#	Time	Username	Problem	Language	Result	Execution time	Memory
959678		Cadoc	Trener (COCI20_trener)	C++14	0 / 110	77 ms	75404 KiB

trener

/*
    Author: Cadocx
    Codeforces: https://codeforces.com/profile/Kadoc
    VNOJ: oj.vnoi.info/user/Cadoc
*/

#include <bits/stdc++.h>
using namespace std;

// input/output
#define fastIO ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define el cout << '\n'
#define execute cerr << "Time elapsed: " << (1.0 * clock() / CLOCKS_PER_SEC) << "s"
// #pragma GCC optimize("O2")
// #pragma GCC optimize("Ofast")
// #pragma GCC target("avx,avx2,fma")
//data type
#define ll long long
#define ull unsigned long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define piv pair<int, vector<int>>
#define vi vector<int>
#define vl vector<ll>
#define vc vector<char>
//STL
#define sz(x) (int)(x).size()
#define for1(i,l,r) for(auto i = l; i <= r; i++)
#define for2(i,r,l) for(auto i = r; i >= l; i--)
#define forin(i,a) for(auto i : a)
#define pb push_back
#define eb emplace_back
#define pf push_front
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second
//bitmask
#define bitcnt(n) __builtin_popcount(n)
#define mask(i) (1 << (i))
#define bit(n, i) (((n) >> (i)) & 1)
#define set_on(n, i) ((n) | mask(i))
#define set_off(n, i) ((n) & ~mask(i))
//constant
#define N 3000005
#define MOD 1000230007
#define INF 0x3f3f3f3f
#define LINF 0x3f3f3f3f3f3f3f3f
#define base 31
#define Kadoc 0

int n, k;
ll f[N];
string s[55][1505];
vector<int> a[N];
map<string, int> mp;

ll calc(int u){
    if(!a[u].size() && (n-1)*k < u && u <= n*k) return f[u] = 1;
    if(f[u]) return f[u];
    ll &ans = f[u];
    for(int v:a[u]) ans += calc(v);
    return ans;
}

void solve(){
    cin >> n >> k;
    for(int i=1; i<=n; ++i) for(int j=1; j<=k; ++j) cin >> s[i][j], mp[s[i][j]] = (i-1)*k + j;

    for(int i=1; i<=k; ++i) a[0].pb(i);
    for(int i=1; i<n; ++i) for(int j=1; j<=k; ++j){
        for(char c='a'; c<='z'; ++c){
            string t1 = s[i][j] + c, t2 = c + s[i][j];
            if(mp.count(t1)) a[(i-1)*k + j].pb(mp[t1]);
            if(mp.count(t2)) a[(i-1)*k + j].pb(mp[t2]);
        }
    }
    for(int i=0; i<=n*k; ++i) a[i].resize(unique(all(a[i])) - a[i].begin());
    
    calc(0);
    cout << f[0];
}

int main(){
    #define NAME "TASK"
    if(fopen(NAME".inp", "r")){
        freopen(NAME".inp", "r", stdin);
        freopen(NAME".out", "w", stdout);
    }

    fastIO;
    
    if(Kadoc){
        int tc; cin >> tc;
        while(tc--){
            solve();
        }
    } else solve();
}

Compilation message (stderr)

trener.cpp: In function 'int main()':
trener.cpp:86:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   86 |         freopen(NAME".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
trener.cpp:87:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |         freopen(NAME".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 22
• Subtask 2: 0 / 33
• Subtask 3: 0 / 55