제출 #233107

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
233107		PeppaPig	Lozinke (COCI17_lozinke)	C++14	100 / 100	328 ms	13220 KiB

lozinke

#include <bits/stdc++.h>

#define long long long

using namespace std;

const int N = 2e4+5;
const int P = 1e9+7;

int n, ans;
char S[N][15];
map<long, int> mp;

int main() {
    scanf("%d", &n);
    for(int i = 1; i <= n; i++) {
        scanf(" %s", S[i] + 1);
        long hsh = 0;
        for(int j = 1; j <= strlen(S[i] + 1); j++)
            hsh = hsh * P + S[i][j];
        ++mp[hsh];
    }
    for(int i = 1; i <= n; i++) {
        int len = strlen(S[i] + 1);
        set<long> st;
        for(int j = 1; j <= len; j++) {
            long hsh = 0;
            for(int k = j; k <= len; k++) {
                hsh = hsh * P + S[i][k];
                if(st.find(hsh) == st.end()) {
                    ans += mp[hsh];
                    if(j == 1 && k == len) --ans;
                    st.emplace(hsh);
                }
            }
        }
    }

    printf("%d\n", ans);

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

lozinke.cpp: In function 'int main()':
lozinke.cpp:19:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int j = 1; j <= strlen(S[i] + 1); j++)
                        ~~^~~~~~~~~~~~~~~~~~~
lozinke.cpp:15:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
lozinke.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf(" %s", S[i] + 1);
         ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100