Submission #459985

#	Time	Username	Problem	Language	Result	Execution time	Memory
459985		ak2006	Nivelle (COCI20_nivelle)	C++14	0 / 110	183 ms	716 KiB

nivelle

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vb = vector<bool>;
using vvb = vector<vb>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vvl = vector<vl>;
using vc = vector<char>;
using vvc = vector<vc>;
using vs = vector<string>;
const ll mod = 1e9 + 7,inf = 1e18;
#define pb push_back
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
void setIO()
{
    fast;
}
int main()
{
    setIO();
    int n;
    cin>>n;
    vi a(n + 1);
    for (int i = 1;i<=n;i++){
        char x;
        cin>>x;
        a[i] = x - 'a';
    }
    ll ansNum = 1,L = 1,R = 1,ansCur = 1;
    for (int num = 1;num<=26;num++){
        set<int>s;
        ll l = 1,r = 1;//[l,r)
        ll maxL = 1,maxR = 1;
        ll cur = 1;
        while (r <= n){
            while (s.size() <= num && r <= n){
                if (r - l > cur){
                    cur = r - l;
                    maxL = l;
                    maxR = r - 1;
                }
                s.insert(a[r++]);
            }
            if (s.size() <= num){
                if (r - l > cur){
                    cur = r - l;
                    maxL = l;
                    maxR = r - 1;
                }
            }
            while (s.size() > num){
                if (s.find(a[l]) != s.end())
                    s.erase(a[l]);
                l++;
            }
        }       
         if (num * ansCur < ansNum * cur){
            ansCur = cur;
            ansNum = num;
            L = maxL;
            R = maxR;
        }
    }
    cout<<L<<" "<<R<<'\n';
    return 0;
}

Compilation message (stderr)

nivelle.cpp: In function 'int main()':
nivelle.cpp:38:29: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |             while (s.size() <= num && r <= n){
      |                    ~~~~~~~~~^~~~~~
nivelle.cpp:46:26: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   46 |             if (s.size() <= num){
      |                 ~~~~~~~~~^~~~~~
nivelle.cpp:53:29: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   53 |             while (s.size() > num){
      |                    ~~~~~~~~~^~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 17
• Subtask 3: 0 / 13
• Subtask 4: 0 / 25
• Subtask 5: 0 / 48