Submission #754263

#	Time	Username	Problem	Language	Result	Execution time	Memory
754263		marvinthang	Game (IOI13_game)	C++17	100 / 100	2087 ms	28056 KiB

game

/*************************************
*    author: marvinthang             *
*    created: 07.06.2023 15:56:53    *
*************************************/

#include "game.h"
#include <bits/stdc++.h>

using namespace std;

#define                  fi  first
#define                  se  second
#define                left  ___left
#define               right  ___right
#define                TIME  (1.0 * clock() / CLOCKS_PER_SEC)
#define             MASK(i)  (1LL << (i))
#define           BIT(x, i)  ((x) >> (i) & 1)
#define  __builtin_popcount  __builtin_popcountll
#define              ALL(v)  (v).begin(), (v).end()
#define           REP(i, n)  for (int i = 0, _n = (n); i < _n; ++i)
#define          REPD(i, n)  for (int i = (n); i--; )
#define        FOR(i, a, b)  for (int i = (a), _b = (b); i < _b; ++i) 
#define       FORD(i, b, a)  for (int i = (b), _a = (a); --i >= _a; ) 
#define       FORE(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i) 
#define      FORDE(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i) 
#define        scan_op(...)  istream & operator >> (istream &in, __VA_ARGS__ &u)
#define       print_op(...)  ostream & operator << (ostream &out, const __VA_ARGS__ &u)
#ifdef LOCAL
    #include "debug.h"
#else
    #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
    #define DB(...) 23
    #define db(...) 23
    #define debug(...) 23
#endif

template <class U, class V> scan_op(pair <U, V>)  { return in >> u.first >> u.second; }
template <class T> scan_op(vector <T>)  { for (size_t i = 0; i < u.size(); ++i) in >> u[i]; return in; }
template <class U, class V> print_op(pair <U, V>)  { return out << '(' << u.first << ", " << u.second << ')'; }
template <size_t i, class T> ostream & print_tuple_utils(ostream &out, const T &tup) { if constexpr(i == tuple_size<T>::value) return out << ")";  else return print_tuple_utils<i + 1, T>(out << (i ? ", " : "(") << get<i>(tup), tup); }
template <class ...U> print_op(tuple<U...>) { return print_tuple_utils<0, tuple<U...>>(out, u); }
template <class Con, class = decltype(begin(declval<Con>()))> typename enable_if <!is_same<Con, string>::value, ostream&>::type operator << (ostream &out, const Con &con) { out << '{'; for (__typeof(con.begin()) it = con.begin(); it != con.end(); ++it) out << (it == con.begin() ? "" : ", ") << *it; return out << '}'; }

// end of template

static char buf[250 << 20];
void* operator new(size_t s) {
    static size_t i = sizeof buf;
    assert(s < i);
    return (void*)&buf[i -= s];
}
void operator delete(void*) {}

long long gcd2(long long X, long long Y) {
    long long tmp;
    while (X != Y && Y != 0) {
        tmp = X;
        X = Y;
        Y = tmp % Y;
    }
    return X;
}

struct Node {
    int l, r;
    long long val;
    Node *left, *right;
    Node(int _l, int _r, long long _v = 0, Node *_left = nullptr, Node *_right = nullptr) {
        l = _l; r = _r;
        val = _v;
        left = _left; right = _right;
    }
    void update(int p, long long v) {
        if (r - l == 1) {
            val = v;
            return;
        }
        int m = l + r >> 1;
        Node *&child = p < m ? left : right;
        if (child == nullptr) child = new Node(p, p + 1);
        else if (child->r <= p || child->l > p) {
            int x = l, y = r;
            int a = min(child->l, p);
            int b = max(child->r, p + 1);
            while (true) {
                int m = x + y >> 1;
                if (a >= m) x = m;
                else if (b <= m) y = m;
                else break;
            }
            m = x + y >> 1;
            Node *nxt = new Node(x, y);
            if (p < m) nxt->right = child;
            else nxt->left = child;
            child = nxt;
        }
        child->update(p, v);
        val = gcd2(left == nullptr ? 0 : left->val, right == nullptr ? 0 : right->val);
    }
    long long get(int u, int v) {
        if (u <= l && r <= v) return val;
        int m = l + r >> 1;
        if (v <= m) return left == nullptr ? 0 : left->get(u, v);
        if (m <= u) return right == nullptr ? 0 : right->get(u, v);
        return gcd2(left == nullptr ? 0 : left->get(u, v), right == nullptr ? 0 : right->get(u, v));
    }
};

Node *copy(Node *cur) {
    return new Node(cur->l, cur->r, cur->val, cur->left == nullptr ? nullptr : copy(cur->left), cur->right == nullptr ? nullptr : copy(cur->right));
}

struct Node2D {
    int l, r;
    Node *val;
    Node2D *left, *right;
    Node2D(int _l, int _r, int _n) {
        l = _l; r = _r;
        val = new Node(0, _n);
        left = right = nullptr;
    }
    void update(int p, int k, long long v) {
        if (r - l == 1) {
            val->update(k, v);
            return;
        }
        int m = l + r >> 1;
        Node2D *&child = p < m ? left : right;
        if (child == nullptr) child = new Node2D(p, p + 1, val->r);
        else if (child->r <= p || child->l > p) {
            int x = l, y = r;
            int a = min(child->l, p);
            int b = max(child->r, p + 1);
            while (true) {
                int m = x + y >> 1;
                if (a >= m) x = m;
                else if (b <= m) y = m;
                else break;
            }
            m = x + y >> 1;
            Node2D *nxt = new Node2D(x, y, val->r);
            if (p < m) nxt->right = child;
            else nxt->left = child;
            nxt->val = copy(child->val);
            child = nxt;
        }
        child->update(p, k, v);
        val->update(k, gcd2(left == nullptr ? 0 : left->val->get(k, k + 1), right == nullptr ? 0 : right->val->get(k, k + 1)));
    }
    long long get(int u, int v, int x, int y) {
        if (u <= l && r <= v) return val->get(x, y);
        int m = l + r >> 1;
        if (v <= m) return left == nullptr ? 0 : left->get(u, v, x, y);
        if (m <= u) return right == nullptr ? 0 : right->get(u, v, x, y);
        return gcd2(left == nullptr ? 0 : left->get(u, v, x, y), right == nullptr ? 0 : right->get(u, v, x, y));
    }
} *root;

void init(int R, int C) {
    root = new Node2D(0, R, C);
}

void update(int P, int Q, long long K) {
    root->update(P, Q, K);
}

long long calculate(int P, int Q, int U, int V) {
    return root->get(P, U + 1, Q, V + 1);
}

#ifdef LOCAL
#include <stdio.h>
#include <stdlib.h>
#include "game.h"

#define fail(s, x...) do { \
        fprintf(stderr, s "\n", ## x); \
        exit(1); \
    } while(0)

#define MAX_SIZE 1000000000
#define MAX_N 272000

int main() {
    freopen("game.out", "w", stdout);
    int R, C, N;
    int P, Q, U, V;
    long long K;
    int i, type;
    int res;

    FILE *f = fopen("game.in", "r");
    if (!f)
        fail("Failed to open input file.");

    res = fscanf(f, "%d", &R);
    res = fscanf(f, "%d", &C);
    res = fscanf(f, "%d", &N);

    init(R, C);

    for (i = 0; i < N; i++) {
        res = fscanf(f, "%d", &type);
        if (type == 1) {
            res = fscanf(f, "%d%d%lld", &P, &Q, &K);
            update(P, Q, K);
        } else if (type == 2) {
            res = fscanf(f, "%d%d%d%d", &P, &Q, &U, &V);
            printf("%lld\n", calculate(P, Q, U, V));
        } else
            fail("Invalid action type in input file.");
    }
    fclose(f);
    cerr << "end game\n";
    return 0;
}
#endif

Compilation message (stderr)

game.cpp: In member function 'void Node::update(int, long long int)':
game.cpp:78:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   78 |         int m = l + r >> 1;
      |                 ~~^~~
game.cpp:86:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   86 |                 int m = x + y >> 1;
      |                         ~~^~~
game.cpp:91:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   91 |             m = x + y >> 1;
      |                 ~~^~~
game.cpp: In member function 'long long int Node::get(int, int)':
game.cpp:102:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  102 |         int m = l + r >> 1;
      |                 ~~^~~
game.cpp: In member function 'void Node2D::update(int, int, long long int)':
game.cpp:127:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  127 |         int m = l + r >> 1;
      |                 ~~^~~
game.cpp:135:27: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  135 |                 int m = x + y >> 1;
      |                         ~~^~~
game.cpp:140:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  140 |             m = x + y >> 1;
      |                 ~~^~~
game.cpp: In member function 'long long int Node2D::get(int, int, int, int)':
game.cpp:152:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  152 |         int m = l + r >> 1;
      |                 ~~^~~

• Subtask 1: 10 / 10
• Subtask 2: 27 / 27
• Subtask 3: 26 / 26
• Subtask 4: 17 / 17
• Subtask 5: 20 / 20