제출 #116820

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
116820		souhhcong	Lozinke (COCI17_lozinke)	C++14	100 / 100	308 ms	15580 KiB

lozinke

#include <iostream>
#include <unordered_map>
#include <string>
#include <unordered_set>
using namespace std;

const int N = 2e4+5;
int n, cnt = 0;
string s[N];
unordered_map<string,int> mp;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    for (int i = 0; i < n; i++)
    {
        cin >> s[i];
        mp[s[i]]++;
    }
//    cout << s[0].substr(0,1) << endl;
    for (int i = 0; i < n; i++)
    {
        unordered_set<string> Set;
        for (int j = 0; j < s[i].size(); j++)
        {
            for (int k = j+1; k <= s[i].size(); k++)
            {
                string tmp = s[i].substr(j,k-j);
                Set.insert(tmp);
            }
        }
        for (auto x: Set)
        {
            cnt += mp[x];
        }
    }

    cout << cnt-n;
}

컴파일 시 표준 에러 (stderr) 메시지

lozinke.cpp: In function 'int main()':
lozinke.cpp:27:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int j = 0; j < s[i].size(); j++)
                         ~~^~~~~~~~~~~~~
lozinke.cpp:29:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int k = j+1; k <= s[i].size(); k++)
                               ~~^~~~~~~~~~~~~~

• Subtask 1: 100 / 100