oj.uz

Submission #381019

# Submission time Handle Problem Language Result Execution time Memory
381019 2021-03-24T08:07:33 Z ne4eHbKa Specijacija (COCI20_specijacija) C++17
110 / 110
 1664 ms 158996 KB 
#include <bits/stdc++.h>
using namespace std;
#ifndef _LOCAL
//#pragma GCC optimize("O3,Ofast")
#else
#pragma GCC optimize("O0")
#endif
template<typename t> inline void umin(t &a, const t b) {a = min(a, b);}
template<typename t> inline void umax(t &a, const t b) {a = max(a, b);}
typedef pair<int, int> pii;
typedef long long ll;
typedef long double ld;
typedef int8_t byte;
ll time() {return chrono::system_clock().now().time_since_epoch().count();}
mt19937 rnd(time());
#define ft first
#define sd second
#define len(f) int((f).size())
#define bnd(f) (f).begin(), (f).end()
#define _ <<' '<<
#define int ll
const int inf = 1e9 + 5;
const ll inf64 = 4e18 + 5;
const int md = 998244353;
namespace MD {
    void add(int &a, const int b) {if((a += b) >= md) a -= md;}
    void sub(int &a, const int b) {if((a -= b) < 0) a += md;}
    int prod(const int a, const int b) {return ll(a) * b % md;}
};

int n, q, T;
const int N = 2e5 + 5;
ll a[N], b[N], t[N], z;

struct tree {
    tree *l, *r;
    int v;
    tree(int tl = 0, int tr = n - 1) {
        if(tl < 0) {
            l = r = 0;
            v = 0;
        } else if(tl < tr) {
            int tm = tl + tr >> 1;
            l = new tree(tl, tm);
            r = new tree(tm + 1, tr);
            v = l->v + r->v;
        } else {
            l = r = 0;
            v = 1;
        }
    }
    tree(const tree *f) {memcpy(this, f, sizeof *f);}
    tree *upd(int i, int tl = 0, int tr = n - 1) const {
        if(tl == tr) return new tree(-1);
        int tm = tl + tr >> 1;
        tree *res = new tree(this);
        if(i <= tm)
            res->l = l->upd(i, tl, tm);
        else
            res->r = r->upd(i, tm + 1, tr);
        res->v--;
        return res;
    }
    int kth(int k, int tl = 0, int tr = n - 1) const {
        if(tl == tr) return tl;
        int tm = tl + tr >> 1;
        return l->v > k
            ? l->kth(k, tl, tm)
            : r->kth(k - l->v, tm + 1, tr);
    }
    int sum(int R, int tl = 0, int tr = n - 1) const {
        if(tr <= R) return v;
        if(tl > R) return 0;
        int tm = tl + tr >> 1;
        return l->sum(R, tl, tm) +
               r->sum(R, tm + 1, tr);
    }
};

vector<tree*> p;

void get(ll &x, int &i, int &j) {
    cin >> x;
    x = 1 + (x - 1 + T * z) % ((n + 1) * ll(n) >> 1);
    i = upper_bound(b, b + n, x) - b - 1;
    j = p[i]->kth(x - b[i]);
}

struct dostat_minimum {
    dostat_minimum *l, *r;
    int v;
    dostat_minimum(int tl = 0, int tr = n - 2) {
        if(tl < tr) {
            int tm = tl + tr >> 1;
            l = new dostat_minimum(tl, tm);
            r = new dostat_minimum(tm + 1, tr);
            v = min(l->v, r->v);
        } else {
            l = r = 0;
            v = t[tl];
        }
    }
    int get(int L, int R, int tl = 0, int tr = n - 2) const {
        if(L > R) return +inf;
        if(L == tl && R == tr) return v;
        int tm = tl + tr >> 1;
        return min(l->get(L, min(R, tm), tl, tm),
                   r->get(max(tm + 1, L), R, tm + 1, tr));
    }
};

void solve() {
    cin >> n >> q >> T; ++n;
    ll real[n];
    for(ll i = 0, j = 1; i < n; ++i) {
        j += i;
        if(i + 1 < n)
            cin >> a[i],
            real[i] = a[i],
            a[i] -= j;
        b[i] = j;
    }
    p.assign(1, new tree());
    for(int i = n - 2; ~i; --i) {
        tree *rt = p.back();
        int c = rt->kth(a[i]);
        p.push_back(rt = rt->upd(c));
        t[c] = i;
    }
    reverse(bnd(p));
    dostat_minimum tt {};
    z = 0;
    for(int i = 0; i < q; ++i) {
        ll x, y;
        int ix, iy, jx, jy;
        get(x, ix, jx);
        get(y, iy, jy);
        if(jx == jy) {
            z = ix < iy ? x : y;
        } else {
            int le = min(jx, jy);
            int ri = max(jx, jy);
            int v = min(min(ix, iy), tt.get(le, ri - 1));
            if (v == ix)
                z = x; else
        if (v == iy)
            z = y;else
                z = real[v];
        }
        cout << z << '\n';
    }
}

signed main() {
    ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#ifndef _LOCAL
//    freopen("file.in", "r", stdin);
//    freopen("file.out", "w", stdout);
#else
    system("color a");
    freopen("in.txt", "r", stdin);
    int t; cin >> t;
    while(t--)
#endif
    solve();
}

Compilation message

Main.cpp: In constructor 'tree::tree(ll, ll)':
Main.cpp:43:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   43 |             int tm = tl + tr >> 1;
      |                      ~~~^~~~
Main.cpp: In member function 'tree* tree::upd(ll, ll, ll) const':
Main.cpp:55:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   55 |         int tm = tl + tr >> 1;
      |                  ~~~^~~~
Main.cpp: In member function 'll tree::kth(ll, ll, ll) const':
Main.cpp:66:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   66 |         int tm = tl + tr >> 1;
      |                  ~~~^~~~
Main.cpp: In member function 'll tree::sum(ll, ll, ll) const':
Main.cpp:74:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   74 |         int tm = tl + tr >> 1;
      |                  ~~~^~~~
Main.cpp: In constructor 'dostat_minimum::dostat_minimum(ll, ll)':
Main.cpp:94:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   94 |             int tm = tl + tr >> 1;
      |                      ~~~^~~~
Main.cpp: In member function 'll dostat_minimum::get(ll, ll, ll, ll) const':
Main.cpp:106:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  106 |         int tm = tl + tr >> 1;
      |                  ~~~^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 422 ms 150364 KB Output is correct
2 Correct 27 ms 11624 KB Output is correct
3 Correct 461 ms 150492 KB Output is correct
4 Correct 202 ms 78944 KB Output is correct
5 Correct 406 ms 150364 KB Output is correct
6 Correct 110 ms 45028 KB Output is correct
7 Correct 308 ms 150236 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 422 ms 150364 KB Output is correct
2 Correct 27 ms 11624 KB Output is correct
3 Correct 461 ms 150492 KB Output is correct
4 Correct 202 ms 78944 KB Output is correct
5 Correct 406 ms 150364 KB Output is correct
6 Correct 110 ms 45028 KB Output is correct
7 Correct 308 ms 150236 KB Output is correct
8 Correct 214 ms 1516 KB Output is correct
9 Correct 170 ms 1260 KB Output is correct
10 Correct 188 ms 1516 KB Output is correct
11 Correct 117 ms 1020 KB Output is correct
12 Correct 189 ms 1516 KB Output is correct
13 Correct 142 ms 1228 KB Output is correct
14 Correct 183 ms 2028 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 422 ms 150364 KB Output is correct
2 Correct 27 ms 11624 KB Output is correct
3 Correct 461 ms 150492 KB Output is correct
4 Correct 202 ms 78944 KB Output is correct
5 Correct 406 ms 150364 KB Output is correct
6 Correct 110 ms 45028 KB Output is correct
7 Correct 308 ms 150236 KB Output is correct
8 Correct 214 ms 1516 KB Output is correct
9 Correct 170 ms 1260 KB Output is correct
10 Correct 188 ms 1516 KB Output is correct
11 Correct 117 ms 1020 KB Output is correct
12 Correct 189 ms 1516 KB Output is correct
13 Correct 142 ms 1228 KB Output is correct
14 Correct 183 ms 2028 KB Output is correct
15 Correct 1651 ms 151004 KB Output is correct
16 Correct 957 ms 30076 KB Output is correct
17 Correct 1657 ms 151160 KB Output is correct
18 Correct 936 ms 30656 KB Output is correct
19 Correct 1653 ms 151004 KB Output is correct
20 Correct 896 ms 27108 KB Output is correct
21 Correct 1475 ms 152284 KB Output is correct

Subtask #4
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 1656 ms 150840 KB Output is correct
2 Correct 1257 ms 76668 KB Output is correct
3 Correct 1626 ms 157392 KB Output is correct
4 Correct 1220 ms 74208 KB Output is correct
5 Correct 1664 ms 157524 KB Output is correct
6 Correct 1283 ms 83040 KB Output is correct
7 Correct 1454 ms 158996 KB Output is correct