oj.uz

Submission #280445

# Submission time Handle Problem Language Result Execution time Memory
280445 2020-08-22T19:17:56 Z Revo7 Lozinke (COCI17_lozinke) C++14
75 / 100
 158 ms 9408 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define left 2*i+1
#define righ 2*i+2
#define mid (l+r)/2
#define IOS ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);

using namespace std;
const ll maxn=2e4+100;
const ll mod=1e9+7;
const ll base=27;

ll n;
string s[maxn];
unordered_map<ll,ll>cnt;
ll ans=0;
unordered_map<ll,bool>vis;
void solve(ll i){
    vis.clear();
    for(ll l=0;l<s[i].size();l++){
        ll ha=0;
        for(ll r=l;r<s[i].size();r++){
            ha=ha*base%mod;
            ha=(ha+(s[i][r]-'a'+1)%mod)%mod;
            if(!vis[ha]){
                ans+=cnt[ha];
                vis[ha]=1;
            }
        }
    }
    ans--;
}
int main()
{
    //setIO("threesum");
    cin>>n;
    for(ll i=0;i<n;i++)cin>>s[i];

    for(ll i=0;i<n;i++){
        ll ha=0;
        for(ll j=0;j<s[i].size();j++){
            ha=ha*base%mod;
            ha=(ha+(s[i][j]-'a'+1))%mod;
        }
        cnt[ha]++;
    }

    for(ll i=0;i<n;i++)solve(i);
    cout<<ans<<endl;
    return 0;
}

Compilation message

lozinke.cpp: In function 'void solve(long long int)':
lozinke.cpp:21:17: 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]
   21 |     for(ll l=0;l<s[i].size();l++){
      |                ~^~~~~~~~~~~~
lozinke.cpp:23:21: 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]
   23 |         for(ll r=l;r<s[i].size();r++){
      |                    ~^~~~~~~~~~~~
lozinke.cpp: In function 'int main()':
lozinke.cpp:42:21: 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]
   42 |         for(ll j=0;j<s[i].size();j++){
      |                    ~^~~~~~~~~~~~

Subtask #1
75.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 896 KB Output is correct
2 Correct 1 ms 1024 KB Output is correct
3 Correct 1 ms 1024 KB Output is correct
4 Correct 2 ms 1024 KB Output is correct
5 Correct 4 ms 1152 KB Output is correct
6 Correct 6 ms 1152 KB Output is correct
7 Correct 7 ms 1536 KB Output is correct
8 Correct 11 ms 2048 KB Output is correct
9 Incorrect 27 ms 1912 KB Output isn't correct
10 Incorrect 60 ms 4764 KB Output isn't correct
11 Correct 44 ms 2908 KB Output is correct
12 Incorrect 158 ms 9408 KB Output isn't correct
13 Correct 75 ms 2040 KB Output is correct
14 Incorrect 135 ms 8764 KB Output isn't correct
15 Incorrect 150 ms 9256 KB Output isn't correct
16 Correct 100 ms 1296 KB Output is correct
17 Correct 60 ms 1152 KB Output is correct
18 Correct 38 ms 1152 KB Output is correct
19 Correct 99 ms 5148 KB Output is correct
20 Correct 50 ms 1152 KB Output is correct