Submission #414845

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
414845	2021-05-31 09:05:35	KoD	Game (IOI13_game)	C++17	100 / 100	8599 ms	54124 KiB

game

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#include <bits/stdc++.h>
#include "game.h"
using ll = long long;
using ull = unsigned long long;
template <class T> using Vec = std::vector<T>;
template <class T> using Box = std::unique_ptr<T>;
ull xorshift() {
    static ull val = 7511168;
    val ^= val >> 7;
    val ^= val << 9;
    return val;
}
struct Node;
using Ptr = Box<Node>;
struct Node {
    int pos, size;
    ull val, gcd;
    Ptr left, right;
    Node(const int p, const ull v): pos(p), size(1), val(v), gcd(v), left(), right() {}
    void fetch() {
        size = (left ? left->size : 0) + 1 + (right ? right->size : 0);
        gcd = val;
        if (left) gcd = std::gcd(gcd, left->gcd);
        if (right) gcd = std::gcd(gcd, right->gcd);
    }
 
 
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Compilation message (stderr)

game.cpp: In function 'Ptr merge(Ptr, Ptr)':
game.cpp:36:42: warning: comparison of integer expressions of different signedness: 'ull' {aka 'long long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if (xorshift() % (x->size + y->size) < x->size) {
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~

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