Submission #845469

#	Time	Username	Problem	Language	Result	Execution time	Memory
845469		vjudge1	Trener (COCI20_trener)	C++17	0 / 110	18 ms	856 KiB

trener

#include <bits/stdc++.h>
#pragma optimize "DostSeferoğlu"
#pragma GCC optimize("unroll-loops,Ofast")
#pragma GCC target("avx2,tune=native")
using namespace std;
#define int long long
#define pii pair<int,int>
#define bg begin
#define vi vector<int>
#define endl '\n'
#define vvi vector<vi> 
#define pc __builtin_popcountll
#define vp vector<pii>
#define sp << " " << 
#define all(x) x.bg()+1,x.end()
#define ff first
#define ss second
#define brake {cout << "OK\n";return;}
#define debug(x) {cout << #x << ": "; for (auto it : x) cout << it << " ";cout << endl;}
#define FF(xxx,sss,yyy) for (int xxx=sss;xxx<=yyy;++xxx)
#define F(xx,yy) for (int xx=1;xx<=yy;++xx)
#define pb push_back 
const int inf = 1e18;
const int MOD = 1e9+7;   
const int N = 2e5+1;
std::random_device rd;
std::mt19937 gen(rd());
std::uniform_int_distribution<> distrib(10000,1000000007);
const int A = distrib(gen);
const int B = distrib(gen);
const int C = distrib(gen);
int add(int x,int y) {
    return ((x%MOD)+(y%MOD))%MOD;
}
int mult(int x,int y) {
    return ((x%MOD)*(y%MOD))%MOD;
}
int hsha(string& s,int l,int r) {
    int ret;
    for (int k=l;k<=r;k++) {
        ret = add(mult(ret,A),s[k-1]);
    }
    return ret;
}
int hshb(string& s,int l,int r) {
    int ret;
    for (int k=l;k<=r;k++) {
        ret = add(mult(ret,B),s[k-1]);
    }
    return ret;
}
int hshc(string& s,int l,int r) {
    int ret;
    for (int k=l;k<=r;k++) {
        ret = add(mult(ret,C),s[k-1]);
    }
    return ret;
}
void solve() {
    int n,k;
    cin >> n >> k;
    int fhasha[n+1][k+1],phasha[n+1][k+1],shasha[n+1][k+1];
    int fhashb[n+1][k+1],phashb[n+1][k+1],shashb[n+1][k+1];
    int fhashc[n+1][k+1],phashc[n+1][k+1],shashc[n+1][k+1];
    F(i,n) {
        F(j,k) {
            string s;
            cin >> s;
            fhasha[i][j] = hsha(s,1,i);
            fhashb[i][j] = hshb(s,1,i);
            fhashc[i][j] = hshc(s,1,i);
            if (i > 1) {
                shasha[i][j] = hsha(s,2,i);
                shashb[i][j] = hshb(s,2,i);
                shashc[i][j] = hshc(s,2,i);
                phasha[i][j] = hsha(s,1,i-1);
                phashb[i][j] = hshb(s,1,i-1);
                phashc[i][j] = hshc(s,1,i-1);
            }
        }
    }
    int ans[n+1][k+1];
    memset(ans,0,sizeof ans);
    F(i,k) ans[1][i] = 1;
    for (int i=1;i<n;i++) {
        for (int j=1;j<=k;j++) {
            for (int j2=1;j2<=k;j2++) {
                if (phasha[i+1][j2] == fhasha[i][j] || shasha[i+1][j2] == fhasha[i][j]) {
                    if (phashb[i+1][j2] == fhashb[i][j] || shashb[i+1][j2] == fhashb[i][j]) {
                        if (phashc[i+1][j2] == fhashc[i][j] || shashc[i+1][j2] == fhashc[i][j]) {
                            ans[i+1][j2]+=ans[i][j];
                        }
                    }
                }
            }
        }
    }
    int sm =  0;
    F(i,k) {
        sm = add(sm,ans[n][i]);
    }
    cout << sm << endl;
}    



signed main() { 
    ios_base::sync_with_stdio(0);cin.tie(0);
    #ifdef Local
        freopen("input.in", "r", stdin);
        freopen("input.out", "w", stdout);  
    #endif
    int t = 1;
    //cin >> t;
    while (t --> 0) solve();
}

Compilation message (stderr)

trener.cpp:2: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    2 | #pragma optimize "DostSeferoğlu"
      | 
trener.cpp: In function 'long long int hsha(std::string&, long long int, long long int)':
trener.cpp:43:12: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   43 |     return ret;
      |            ^~~
trener.cpp: In function 'long long int hshb(std::string&, long long int, long long int)':
trener.cpp:50:12: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   50 |     return ret;
      |            ^~~
trener.cpp: In function 'long long int hshc(std::string&, long long int, long long int)':
trener.cpp:57:12: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   57 |     return ret;
      |            ^~~
trener.cpp: In function 'void solve()':
trener.cpp:36:15: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |     return ((x%MOD)*(y%MOD))%MOD;
      |             ~~^~~~~
trener.cpp:53:9: note: 'ret' was declared here
   53 |     int ret;
      |         ^~~
trener.cpp:36:15: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |     return ((x%MOD)*(y%MOD))%MOD;
      |             ~~^~~~~
trener.cpp:46:9: note: 'ret' was declared here
   46 |     int ret;
      |         ^~~
trener.cpp:36:15: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |     return ((x%MOD)*(y%MOD))%MOD;
      |             ~~^~~~~
trener.cpp:39:9: note: 'ret' was declared here
   39 |     int ret;
      |         ^~~
trener.cpp:36:15: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |     return ((x%MOD)*(y%MOD))%MOD;
      |             ~~^~~~~
trener.cpp:53:9: note: 'ret' was declared here
   53 |     int ret;
      |         ^~~
trener.cpp:36:15: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |     return ((x%MOD)*(y%MOD))%MOD;
      |             ~~^~~~~
trener.cpp:46:9: note: 'ret' was declared here
   46 |     int ret;
      |         ^~~
trener.cpp:36:15: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |     return ((x%MOD)*(y%MOD))%MOD;
      |             ~~^~~~~
trener.cpp:39:9: note: 'ret' was declared here
   39 |     int ret;
      |         ^~~
trener.cpp:36:15: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |     return ((x%MOD)*(y%MOD))%MOD;
      |             ~~^~~~~
trener.cpp:53:9: note: 'ret' was declared here
   53 |     int ret;
      |         ^~~
trener.cpp:36:15: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |     return ((x%MOD)*(y%MOD))%MOD;
      |             ~~^~~~~
trener.cpp:46:9: note: 'ret' was declared here
   46 |     int ret;
      |         ^~~
trener.cpp:36:15: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
   36 |     return ((x%MOD)*(y%MOD))%MOD;
      |             ~~^~~~~
trener.cpp:39:9: note: 'ret' was declared here
   39 |     int ret;
      |         ^~~

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