Submission #908689

#	Time	Username	Problem	Language	Result	Execution time	Memory
908689		phong	Nekameleoni (COCI15_nekameleoni)	C++17	0 / 140	2542 ms	33152 KiB

nekameleoni

#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma")
#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>

#define ll long long
const int nmax = 1e5 + 5;
const ll oo = 1e9;
const int lg = 3;
const int tx = 2;
#define pii pair<int, int>
#define fi first
#define se second
#define debug(a, n) for(int i = 1; i <= n; ++i) cout << a[i] << ' ';
using namespace std;

int n, k, m;
int A[nmax];
vector<int> de;
int cnt[nmax];
struct node{
    int ans;
    vector<int> f, g;
    friend node operator + (const node &a, const node &b){
        node res;
        res.ans = min(a.ans, b.ans);
        de.clear();
        de.resize(a.f.size() + b.g.size());
        merge(a.f.begin(), a.f.end(), b.g.begin(), b.g.end(), de.begin());

        for(int i = 0; i < de.size(); ++i){
            int x = A[de[i]];
            if(++cnt[x] == 1) res.g.push_back(de[i]);
//            cout << de[i] << ' ';
        }
//        cout << "\n";
        for(int i = 1; i <= k; ++i) cnt[i] = 0;
        for(int i = de.size() - 1; i >= 0; --i){
            int x = A[de[i]];
            if(++cnt[x] == 1) res.f.push_back(de[i]);
        }
        reverse(res.f.begin(), res.f.end());
        for(int i = 1; i <= k; ++i) cnt[i] = 0;

        int pos = 0, cur = 0;
        for(int i = 0; i < de.size(); ++i){
//                cout << de[i] << ' ';
            int p = A[de[i]];
            cnt[p]++;
            if(cnt[p] == 1) ++cur;
            while(cnt[A[de[pos]]] == 2){
                cnt[A[de[pos]]]--;
                pos++;
            }
            if(cur == k) res.ans = min(res.ans, de[i] - de[pos] + 1);
        }
//        cout << "\n";
        for(auto p : de) cnt[A[p]] = 0;
        return res;
    }
}st[1 << 18];

void update(int id, int l, int r, int u, int val){
    if(l > u || r < u) return;
    if(l == r){
        if(k == 1) st[id].ans = 1;
        else st[id].ans = oo;
        st[id].f.clear();
        st[id].g.clear();
        st[id].f.push_back(l);
        st[id].g.push_back(l);
        A[l] = val;
        return;
    }
    int mid = r + l >> 1;
    update(id << 1, l, mid, u, val);
    update(id << 1 | 1, mid + 1, r, u, val);
    st[id] = st[id << 1] + st[id << 1 | 1];
}


main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
//    freopen("code.inp", "r", stdin);
//    freopen("code.out", "w", stdout);
    cin >> n >> k >> m;
    for(int i = 1; i <= n; ++i) cin >> A[i];
    for(int i = 1; i <= n; ++i){
        update(1, 1, n, i, A[i]);
    }
//    for(int i = 1; i <= k; ++i){
//        cout << st[1].g[i] << ' ';
//    }
    while(m--){
        int t;
        cin >> t;
        if(t == 1){
            int u, v;
            cin >> u >> v;
            update(1, 1, n, u, v);
//             for(int i = 1; i <= n; ++i)

        }
        else{
            if(st[1].ans == oo) cout << -1 << "\n";
            else cout << st[1].ans << "\n";
        }
    }


}
/*
8 5 2
1 3 4 4 4 2 5 3
1 4 1
2
2





*/

Compilation message (stderr)

nekameleoni.cpp: In function 'node operator+(const node&, const node&)':
nekameleoni.cpp:31:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |         for(int i = 0; i < de.size(); ++i){
      |                        ~~^~~~~~~~~~~
nekameleoni.cpp:46:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         for(int i = 0; i < de.size(); ++i){
      |                        ~~^~~~~~~~~~~
nekameleoni.cpp: In function 'void update(int, int, int, int, int)':
nekameleoni.cpp:75:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   75 |     int mid = r + l >> 1;
      |               ~~^~~
nekameleoni.cpp: At global scope:
nekameleoni.cpp:82:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   82 | main(){
      | ^~~~

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 14
• Subtask 6: 0 / 14
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• Subtask 10: 0 / 14