Submission #701245

#	Time	Username	Problem	Language	Result	Execution time	Memory
701245		tamthegod	Rima (COCI17_rima)	C++17	28 / 140	1091 ms	35144 KiB

rima

// Make the best become better
// No room for laziness
#include<bits/stdc++.h>

#define int long long
#define pb push_back
#define fi first
#define se second
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int maxN = 1e6 + 5;
const int mod = (int)1e14 + 7;
const ll oo = 1e18;
int n;
string s[maxN];
map<int, int> f;
const int base = 2347;
int dp[maxN];
void ReadInput()
{
    cin >> n;
    for(int i=1; i<=n; i++)
    {
        cin >> s[i];
        reverse(s[i].begin(), s[i].end());
        s[i] = ' ' + s[i];
    }
    sort(s + 1, s + n + 1, [](string p, string q)
    {
        return p.size() > q.size();
    });
}
int lcp(int i, int j)
{
    int p = 1;
    while(p < s[i].size() && p < s[j].size() && s[i][p] == s[j][p]) p++;
    return p - 1;
}
void Solve()
{
    for(int i=1; i<=n; i++)
    {
        dp[i] = 1;
        for(int j=i-1; j>=1; j--)
            if(lcp(i, j) >= s[i].size() - 2) dp[i] = max(dp[i], dp[j] + 1);
      //  cout << s[i] << '\n';
    }//return;
    cout << *max_element(dp + 1, dp + n + 1);return;
    int res = 0;
    for(int i=1; i<=n; i++)
    {
        int val = 0;
        for(int j=1; j<s[i].size(); j++)
            dp[j] = (dp[j - 1] * base + s[i][j]) % mod;
        val = max(f[dp[s[i].size() - 1]], f[dp[s[i].size() - 2]]);
        val++;
        f[dp[s[i].size() - 1]] = max(f[dp[s[i].size() - 1]], val);
        f[dp[s[i].size() - 2]] = max(f[dp[s[i].size() - 2]], val);
        res = max(res, val);
        cout << val << " ";
    }
   // cout << res;
}
int32_t main()
{
   // freopen("sol.inp", "r", stdin);
   // freopen("sol.out", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    ReadInput();
    Solve();
}
// 1 1 2 3 4 5 1 1 2 6 2 3 4 7 5 1 1 1
// 1 1 2 3 4 5 1 6 7 8 2 3 4 9 5 1 1 1

Compilation message (stderr)

rima.cpp: In function 'long long int lcp(long long int, long long int)':
rima.cpp:39:13: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     while(p < s[i].size() && p < s[j].size() && s[i][p] == s[j][p]) p++;
      |           ~~^~~~~~~~~~~~~
rima.cpp:39:32: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     while(p < s[i].size() && p < s[j].size() && s[i][p] == s[j][p]) p++;
      |                              ~~^~~~~~~~~~~~~
rima.cpp: In function 'void Solve()':
rima.cpp:48:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |             if(lcp(i, j) >= s[i].size() - 2) dp[i] = max(dp[i], dp[j] + 1);
      |                ~~~~~~~~~~^~~~~~~~~~~~~~~~~~
rima.cpp:56:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |         for(int j=1; j<s[i].size(); j++)
      |                      ~^~~~~~~~~~~~

• Subtask 1: 28 / 140