Submission #1029761

#	Time	Username	Problem	Language	Result	Execution time	Memory
1029761		earlyamazon	Savez (COCI15_savez)	C++14	0 / 120	1091 ms	2644 KiB

savez

// brut n <= 20, S <= 500

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

const int mn = 503;

int n,wyn;
string t[mn];
bool ok[mn][mn];

bool czy1w2(string s1, string s2){
    if (s1.size() > s2.size()) return 0;
    for (int i = 0; i < s1.size(); i++){
        if (s1[i] != s2[i] || s1[s1.size()-i-1] != s2[s2.size()-i-1]) return 0;
    }
    return 1;
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n;
    for (int i = 0; i < n; i++){
        cin>>t[i];
    }
    for (int i = 0; i < n; i++){
        for (int j = i+1; j < n; j++){
            if (czy1w2(t[i], t[j])){
                ok[i][j] = 1;
            }
        }
    }
    for (int i = 1; i < (1<<n); i++){
        vector<int> kt;
        for (int j = 0; j < n; j++){
            if ((1<<j)&i) kt.push_back(j);
        }
        bool czyok = 1;
        for (int j = 1; j < kt.size(); j++){
            if (!ok[kt[j-1]][kt[j]]) czyok = 0;
        }
        if (czyok) wyn = max(wyn, (int)kt.size());
    }
    cout<<wyn<<"\n";
}

Compilation message (stderr)

savez.cpp: In function 'bool czy1w2(std::string, std::string)':
savez.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 0; i < s1.size(); i++){
      |                     ~~^~~~~~~~~~~
savez.cpp: In function 'int main()':
savez.cpp:39:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |         for (int j = 1; j < kt.size(); j++){
      |                         ~~^~~~~~~~~~~

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