Submission #799060

#	Time	Username	Problem	Language	Result	Execution time	Memory
799060		alittlemiddle	Game (IOI13_game)	C++14	0 / 100	1 ms	340 KiB

game

#include "game.h"
#include<bits/stdc++.h>
#define el '\n'
#define fi first
#define sc second
#define pii pair<int, int>
#define all(v) v.begin(), v.end()
using namespace std;
using ll=long long;
using ull=unsigned long long;
using ld=long double;
const int mod=1e9+7;
const int N=1e5+11;
ll m, n;
ll gcd(ll x, ll y)
{
    __gcd(x, y);
}
struct node1
{
    ll l, r, ss;
    node1 *left, *right;
    node1(ll _l, ll _r)
    {
        l = _l;
        r = _r;
        ss = 0;
        left = right = NULL;
    }

    void down()
    {
        if (l != r && left == NULL)
        {
            ll mid=(l+r)>>1;
            left = new node1(l, mid);
            right = new node1(mid+1, r);
        }
    }

    void update(ll i, ll v)
    {
        if (r < i || i < l) return;
        down();
        if (l == r)
        {
            ss = v;
            return;
        }
        left->update(i, v);
        right->update(i, v);
        ss = gcd(left->ss, right->ss);
    }

    ll get(ll a, ll b)
    {
        if (r < a || b < l) return 0;
        down();
        if (a <= l && r <= b) return ss;
        return gcd(left->get(a, b), right->get(a, b));
    }
};

struct node2
{
    ll l, r, ss;
    node2 *left, *right;
    node1 *node;
    node2(ll _l, ll _r)
    {
        l = _l;
        r = _r;
        ss = 0;
        left = right = NULL;
        node = new node1(0, n-1);
    }

    void down()
    {
        if (l!=r && left == NULL)
        {
            ll mid=(l+r)>>1;
            left = new node2(l, mid);
            right = new node2(mid+1, r);
        }
    }

    void update(ll x, ll y, ll val)
    {
        if (r<x || x<l) return;
        down();
        node->update(y, val);
        if (l==r) return;
        left->update(x, y, val);
        right->update(x, y, val);
    }

    ll get(ll x, ll y, ll u, ll v)
    {
        if (r<x || u<l) return 0;
        down();
        if (x<=l && r<=u) return node->get(y, v);
        return gcd(left->get(x, y, u, v), right->get(x, y, u, v));
    }
}*root;
void init(int R, int C)
{
    m = R;
    n = C;
    root = new node2(0, R-1);
}
 
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, Q, U, V);
}

Compilation message (stderr)

game.cpp: In function 'll gcd(ll, ll)':
game.cpp:18:1: warning: no return statement in function returning non-void [-Wreturn-type]
   18 | }
      | ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 27
• Subtask 3: 0 / 26
• Subtask 4: 0 / 17
• Subtask 5: 0 / 20