oj.uz

Submission #557394

# Submission time Handle Problem Language Result Execution time Memory
557394 2022-05-05T09:07:00 Z new_acc Ekoeko (COCI21_ekoeko) C++14
110 / 110
 46 ms 27360 KB 
#include<bits/stdc++.h>
#define fi first
#define se second
#define pitem item*
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef vector<ll> vl;
const int N=1e6+10;
const int SS=1<<19;
const int INFi=2e9;
const ll INFl=1e13;
const ll mod2=998244353;
const ll mod=1e9+7;
const ll mod3=1000696969;
const ll p=70032301;
const ull p2=913;
const int L=20;
int t[N],seg[(SS<<1)+10],wsk[N],il[N],pom[N];
vi g[N];
void upd(int a,int b){
    for(a+=SS;a>0;a>>=1) seg[a]+=b;
}
int Query(int a,int b){
    int res=0;
    for(a+=SS-1,b+=SS+1;(a>>1)!=(b>>1);a>>=1,b>>=1){
        if(!(a&1)) res+=seg[a+1];
        if(b&1) res+=seg[b-1];
    }
    return res;
}
ll cnt(string a,string b){
    a="#"+a,b="#"+b;
    for(int i=1;i<a.size();i++){
        int curr=int(a[i])-96;
        g[curr].push_back(i);
    }
    ll res=0;
    for(int i=1;i<b.size();i++){
        int curr=int(b[i])-96;
        int currl=g[curr][wsk[curr]++];
        res+=(ll)Query(currl,a.size());
        upd(currl,1);
    }
    return res;
}
void solve(){   
    int n;
    string s; 
    cin>>n>>s;
    for(int i=0;i<s.size();i++) il[int(s[i])-96]++;
    string res;
    for(int i=0;i<s.size();i++){
        pom[int(s[i])-96]++;
        if(pom[int(s[i])-96]<=(il[int(s[i])-96]>>1)) res+=s[i];
    }
    res=res+res;
    cout<<cnt(s,res)<<"\n";
}
int main(){
    ios_base::sync_with_stdio(0),cin.tie(0);
    int tt=1;
    while(tt--) solve();
}

Compilation message

Main.cpp: In function 'll cnt(std::string, std::string)':
Main.cpp:35:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for(int i=1;i<a.size();i++){
      |                 ~^~~~~~~~~
Main.cpp:40:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |     for(int i=1;i<b.size();i++){
      |                 ~^~~~~~~~~
Main.cpp: In function 'void solve()':
Main.cpp:52:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |     for(int i=0;i<s.size();i++) il[int(s[i])-96]++;
      |                 ~^~~~~~~~~
Main.cpp:54:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for(int i=0;i<s.size();i++){
      |                 ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 20 ms 25216 KB Output is correct
3 Correct 31 ms 26076 KB Output is correct
4 Correct 33 ms 27104 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 20 ms 25216 KB Output is correct
3 Correct 31 ms 26076 KB Output is correct
4 Correct 33 ms 27104 KB Output is correct
5 Correct 13 ms 23812 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 13 ms 23764 KB Output is correct
8 Correct 14 ms 23764 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 20 ms 25216 KB Output is correct
3 Correct 31 ms 26076 KB Output is correct
4 Correct 33 ms 27104 KB Output is correct
5 Correct 12 ms 23844 KB Output is correct
6 Correct 37 ms 27336 KB Output is correct
7 Correct 43 ms 27324 KB Output is correct
8 Correct 42 ms 27344 KB Output is correct
9 Correct 45 ms 27240 KB Output is correct
10 Correct 43 ms 27276 KB Output is correct
11 Correct 35 ms 27168 KB Output is correct
12 Correct 35 ms 27160 KB Output is correct
13 Correct 35 ms 27164 KB Output is correct
14 Correct 34 ms 27036 KB Output is correct
15 Correct 36 ms 27012 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 23800 KB Output is correct
2 Correct 18 ms 23856 KB Output is correct
3 Correct 19 ms 23924 KB Output is correct
4 Correct 16 ms 23860 KB Output is correct
5 Correct 12 ms 23892 KB Output is correct
6 Correct 19 ms 23836 KB Output is correct
7 Correct 21 ms 23936 KB Output is correct
8 Correct 16 ms 23884 KB Output is correct
9 Correct 15 ms 23812 KB Output is correct
10 Correct 16 ms 23896 KB Output is correct
11 Correct 14 ms 23904 KB Output is correct

Subtask #5
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 20 ms 25216 KB Output is correct
3 Correct 31 ms 26076 KB Output is correct
4 Correct 33 ms 27104 KB Output is correct
5 Correct 13 ms 23812 KB Output is correct
6 Correct 13 ms 23764 KB Output is correct
7 Correct 13 ms 23764 KB Output is correct
8 Correct 14 ms 23764 KB Output is correct
9 Correct 12 ms 23844 KB Output is correct
10 Correct 37 ms 27336 KB Output is correct
11 Correct 43 ms 27324 KB Output is correct
12 Correct 42 ms 27344 KB Output is correct
13 Correct 45 ms 27240 KB Output is correct
14 Correct 43 ms 27276 KB Output is correct
15 Correct 35 ms 27168 KB Output is correct
16 Correct 35 ms 27160 KB Output is correct
17 Correct 35 ms 27164 KB Output is correct
18 Correct 34 ms 27036 KB Output is correct
19 Correct 36 ms 27012 KB Output is correct
20 Correct 19 ms 23800 KB Output is correct
21 Correct 18 ms 23856 KB Output is correct
22 Correct 19 ms 23924 KB Output is correct
23 Correct 16 ms 23860 KB Output is correct
24 Correct 12 ms 23892 KB Output is correct
25 Correct 19 ms 23836 KB Output is correct
26 Correct 21 ms 23936 KB Output is correct
27 Correct 16 ms 23884 KB Output is correct
28 Correct 15 ms 23812 KB Output is correct
29 Correct 16 ms 23896 KB Output is correct
30 Correct 14 ms 23904 KB Output is correct
31 Correct 17 ms 23808 KB Output is correct
32 Correct 41 ms 27316 KB Output is correct
33 Correct 46 ms 27256 KB Output is correct
34 Correct 40 ms 27360 KB Output is correct
35 Correct 39 ms 27196 KB Output is correct
36 Correct 35 ms 27224 KB Output is correct
37 Correct 37 ms 27232 KB Output is correct
38 Correct 44 ms 27156 KB Output is correct
39 Correct 36 ms 27144 KB Output is correct
40 Correct 35 ms 27052 KB Output is correct
41 Correct 35 ms 27132 KB Output is correct