oj.uz

Submission #805792

# Submission time Handle Problem Language Result Execution time Memory
805792 2023-08-03T23:35:03 Z farhan132 Segments (IZhO18_segments) C++17
16 / 100
 1039 ms 4760 KB 
/***Farhan132***/
// #pragma GCC optimize("Ofast,fast-math")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma")
// #pragma GCC optimization ("unroll-loops")

#include <bits/stdc++.h>
 
using namespace std;
 
typedef int ll;
typedef double dd;
typedef pair<ll , ll> ii;
typedef tuple < ll,  ll, ll > tp;
 
#define ff first
#define ss second
#define pb push_back
#define in insert
#define bug printf("**!\n")
#define mem(a , b) memset(a, b ,sizeof(a))
#define front_zero(n) __builtin_clz(n)
#define back_zero(n) __builtin_ctzll(n)
#define total_one(n) __builtin_popcount(n)
#define clean fflush(stdout)
 
const ll mod =  (ll) 998244353;
// const ll mod =  (ll) 1e9 + 7;
const ll inf = numeric_limits<int>::max()-1;
const ll INF = (ll)2e18;
 
// ll dx[]={0,1,0,-1};
// ll dy[]={1,0,-1,0};
// ll dxx[]={0,1,0,-1,1,1,-1,-1};
// ll dyy[]={1,0,-1,0,1,-1,1,-1};
 
mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
 
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
 
template <typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

const ll N = 450;

vector < ll > R[450], sz[450];
vector < ii > req[450];
ll lx[450], rx[450], S[450]; ii range[450 * 450];
ll block_cnt = 1;

void add(ll l, ll r){
    for(ll block = 0; block < block_cnt; block++){
        if(lx[block] <= l && l <= rx[block]){
            S[block]++;
            R[block].pb(r);
            sz[block].pb(r - l + 1);
            req[block].pb({l, r});
            for(ll i = S[block] - 1; i >= 1; i--){
                if(R[block][i - 1] > R[block][i]) swap(R[block][i], R[block][i - 1]);
                if(sz[block][i - 1] > sz[block][i]) swap(sz[block][i], sz[block][i - 1]);
                if(req[block][i - 1] > req[block][i]) swap(req[block][i], req[block][i - 1]);
            }
            return;
        }
    }
}
void remove(ll l, ll r){
    // NOTE: must TLE for multiple l
    for(ll block = 0; block < block_cnt; block++){
        if(lx[block] <= l && l <= rx[block]){
            bool done = 0;
            for(ll i = 0; i < req[block].size(); i++){
                if(req[block][i] == make_pair(l, r)){
                    req[block].erase(req[block].begin() + i);
                    done = 1;
                    break;
                }
            }
            if(!done) continue;
            S[block]--;
            for(ll i = 0; i < R[block].size(); i++){
                if(R[block][i] == r){
                    R[block].erase(R[block].begin() + i);
                    break;
                }
            }
            for(ll i = 0; i < sz[block].size(); i++){
                if(sz[block][i] == r - l + 1){
                    sz[block].erase(sz[block].begin() + i);
                    break;
                }
            }
            return;
        }
    }
}
ll query(ll lastans, ll t){
    ll l, r, k; cin >> l >> r >> k;

    l ^= t * lastans;
    r ^= t * lastans;

    if(l > r) swap(l, r);
    if(r - l + 1 < k){
        return 0;
    } 

    ll ans = 0;
    if(k == 0){
        for(ll i = 0; i < block_cnt; i++) ans += req[i].size();
        return ans;
    }

    for(ll i = 0; i < block_cnt; i++){
        if(lx[i] + k - 1 > r) break;
        if(rx[i] <= l){
            if(!S[i]) continue;
            ans += (S[i] - (upper_bound(R[i].begin(), R[i].end(), l + k - 2) - R[i].begin()));
            continue;
        }
        if(l <= lx[i] && rx[i] + k - 1 <= r){
            if(!S[i]) continue;
            ans += (S[i] - (upper_bound(sz[i].begin(), sz[i].end(), k - 1) - sz[i].begin()));            
            continue;
        }

        for(auto [x, y] : req[i]){
            ans += ( (min(y, r) - max(l, x) + 1) >= k);
        }
    }
    return ans;
}
void build(){
    vector < ii > a;
    for(ll i = 0; i < block_cnt; i++){
        for(auto x : req[i]) a.pb(x);
        R[i].clear(); sz[i].clear(); req[i].clear();
        S[i] = 0;
    }
    sort(a.begin(), a.end());
    block_cnt = (a.size() - 1) / N; block_cnt++;
    for(ll i = 0; i < a.size(); i++){
        auto [l, r] = a[i];
        R[i / N].pb(r);
        sz[i / N].pb(r - l + 1);
        req[i / N].pb(a[i]);
        S[i / N]++;
    }

    for(ll i = 0; i < block_cnt; i++){
        sort(R[i].begin(), R[i].end());
        sort(sz[i].begin(), sz[i].end());
    }
    lx[0] = 0; rx[block_cnt - 1] = inf;
    for(ll i = 1; i < block_cnt; i++){
        lx[i] = rx[i - 1] = req[i][0].ff;
    }

    return;
}

void solve(){

    ll n, t; cin >> n >> t;

    ll changes = 0;

    ll cur = 0;
    lx[0] = 0; rx[0] = inf; S[0] = 0;
    ll lastans = 0;
    mem(S, 0);

    while(n--){
        ll T; cin >> T;
        if(T == 1){
            cin >> range[++cur].ff >> range[cur].ss;
            range[cur].ff ^= (t * lastans);
            range[cur].ss ^= (t * lastans);
            if(range[cur].ff > range[cur].ss) swap(range[cur].ff, range[cur].ss);
            add(range[cur].ff, range[cur].ss);
            changes++;
        }
        if(T == 2){
            ll id; cin >> id;
            remove(range[id].ff, range[id].ss);
        }
        if(T == 3){
            lastans = query(lastans, t);
            cout << lastans << '\n';
        }
        if(changes >= N){
            changes = 0;
            build();
        }
    }
    
   return;
}

int main() {

    #ifdef LOCAL
        freopen("in.txt", "r", stdin);
        freopen("out.txt", "w", stdout);
        auto start_time = clock();
    #else
         // freopen("subsequence.in", "r", stdin);
         // freopen("subsequence.out", "w", stdout); 
         ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL);
    #endif

    //precalc();
 
    ll T = 1, CT = 0; //cin >> T; 
 
    while(T--){
        // cout << "Case #" << ++CT << ": ";
        solve();
    }
    
    #ifdef LOCAL
        auto end_time = clock();
        cerr<< "Execution time: "<<(end_time - start_time)*(int)1e3/CLOCKS_PER_SEC<<" ms\n";
    #endif
 
    return 0;
}

Compilation message

segments.cpp: In function 'void remove(ll, ll)':
segments.cpp:72:29: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |             for(ll i = 0; i < req[block].size(); i++){
      |                           ~~^~~~~~~~~~~~~~~~~~~
segments.cpp:81:29: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |             for(ll i = 0; i < R[block].size(); i++){
      |                           ~~^~~~~~~~~~~~~~~~~
segments.cpp:87:29: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   87 |             for(ll i = 0; i < sz[block].size(); i++){
      |                           ~~^~~~~~~~~~~~~~~~~~
segments.cpp: In function 'void build()':
segments.cpp:142:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  142 |     for(ll i = 0; i < a.size(); i++){
      |                   ~~^~~~~~~~~~
segments.cpp: In function 'void solve()':
segments.cpp:176:26: warning: operation on 'cur' may be undefined [-Wsequence-point]
  176 |             cin >> range[++cur].ff >> range[cur].ss;
      |                          ^~~~~
segments.cpp: In function 'int main()':
segments.cpp:214:15: warning: unused variable 'CT' [-Wunused-variable]
  214 |     ll T = 1, CT = 0; //cin >> T;
      |               ^~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 464 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Incorrect 9 ms 592 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 566 ms 2584 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 704 KB Output is correct
2 Correct 32 ms 700 KB Output is correct
3 Correct 76 ms 748 KB Output is correct
4 Correct 35 ms 688 KB Output is correct
5 Correct 763 ms 3860 KB Output is correct
6 Correct 654 ms 2960 KB Output is correct
7 Correct 696 ms 3088 KB Output is correct
8 Correct 1039 ms 4760 KB Output is correct
9 Correct 993 ms 4504 KB Output is correct
10 Correct 734 ms 3292 KB Output is correct
11 Correct 132 ms 964 KB Output is correct
12 Correct 747 ms 3848 KB Output is correct
13 Correct 666 ms 3080 KB Output is correct
14 Correct 376 ms 1944 KB Output is correct
15 Correct 337 ms 1780 KB Output is correct
16 Correct 252 ms 1440 KB Output is correct
17 Correct 548 ms 2468 KB Output is correct
18 Correct 539 ms 2508 KB Output is correct
19 Correct 545 ms 2608 KB Output is correct
20 Correct 542 ms 2500 KB Output is correct
21 Correct 150 ms 1056 KB Output is correct
22 Correct 453 ms 2432 KB Output is correct
23 Correct 560 ms 2768 KB Output is correct
24 Correct 474 ms 2548 KB Output is correct
25 Correct 66 ms 628 KB Output is correct
26 Correct 39 ms 716 KB Output is correct
27 Correct 51 ms 680 KB Output is correct
28 Correct 42 ms 712 KB Output is correct
29 Correct 614 ms 3008 KB Output is correct
30 Correct 617 ms 3200 KB Output is correct
31 Correct 999 ms 4532 KB Output is correct
32 Correct 731 ms 3172 KB Output is correct
33 Correct 686 ms 3172 KB Output is correct
34 Correct 324 ms 1792 KB Output is correct
35 Correct 567 ms 2708 KB Output is correct
36 Correct 725 ms 3224 KB Output is correct

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 660 KB Output is correct
2 Correct 38 ms 624 KB Output is correct
3 Correct 34 ms 652 KB Output is correct
4 Correct 41 ms 644 KB Output is correct
5 Incorrect 846 ms 3984 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 464 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Incorrect 9 ms 592 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #6
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 464 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Incorrect 9 ms 592 KB Output isn't correct
6 Halted 0 ms 0 KB -