Submission #908588

#	Time	Username	Problem	Language	Result	Execution time	Memory
908588		phong	Nekameleoni (COCI15_nekameleoni)	C++17	0 / 140	3058 ms	107912 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, vv;
int cnt[nmax];

struct node{
    int f[51], ans, g[51];
    node(){
        memset(f, -1, sizeof f);
        memset(g, -1, sizeof g);
    }
    friend node operator + (const node &a, const node &b){
        node res;
        for(int i = 1; i <= k; ++i) res.f[i] = res.g[i] = -1;
        res.ans = min(a.ans, b.ans);
        for(int i = 1; i <= k; ++i){
            if(b.f[i] != -1) res.f[i] = b.f[i];
            else res.f[i] = a.f[i];
        }
        for(int i = 1; i <= k; ++i){
            if(a.g[i] != -1) res.g[i] = a.g[i];
            else res.g[i] = b.g[i];
        }
        for(int i = 1; i <= k; ++i){
            if(a.f[i] != -1) de.push_back(a.f[i]);
            if(b.g[i] != -1) de.push_back(b.g[i]);
        }
        sort(de.begin(), de.end());
        int pos = 0, cur = 0;
        for(int i = 0; i < de.size(); ++i){
            int p = A[de[i]];
            cnt[p]++;
            if(cnt[p] == 1) ++cur;
            if(cnt[A[pos]] == 2){
                cnt[A[pos]]--;
                pos++;
            }
            if(cur == k) res.ans = min(res.ans, de[i] - de[pos] + 1);
        }
        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[A[l]] = -1;
        st[id].f[val] = l;
        st[id].g[A[l]] = -1;
        st[id].g[val] = 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("scc.inp", "r", stdin);
//    freopen("scc.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";
        }
    }


}
/*
4 3 1
2 3 1 2
2

*/

Compilation message (stderr)

nekameleoni.cpp: In function 'node operator+(const node&, const node&)':
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:73:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   73 |     int mid = r + l >> 1;
      |               ~~^~~
nekameleoni.cpp: At global scope:
nekameleoni.cpp:80:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   80 | 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
• Subtask 7: 0 / 14
• Subtask 8: 0 / 14
• Subtask 9: 0 / 14
• Subtask 10: 0 / 14