Submission #799204

#	Time	Username	Problem	Language	Result	Execution time	Memory
799204		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=5e6+11;
ll m, n;
ll gcd(ll x, ll y)
{
  if(y==0) return x;
  else return gcd(y, x % y);
}
ll ss[N];
int L[N], R[N], root[N], lazy[N];
int cur = 1;
void down(int id, int l, int r)
{
    int mid = (l + r) >> 1;
    if (lazy[id] <= mid)
    {
        L[id] = ++cur;
        ss[L[id]] = ss[id];
        lazy[L[id]] = lazy[id];
    }
    else
    {
        R[id] = ++cur;
        ss[R[id]] = ss[id];
        lazy[R[id]] = lazy[id];
    }
    lazy[id] = 0;
}
void update1(int id, int l, int r, int pos, ll val)
{
    if (l==r)
    {
        ss[id] = val;
        return;
    }
    if(lazy[id])
    {
        if(lazy[id]==pos) ss[id] = val;
        else down(id, l, r);
    }
    int mid = (l+r)>>1;
    if(pos<=mid)
    {
        if (!L[id])
        {
            L[id] = ++cur;
            ss[L[id]] = val;
            lazy[L[id]] = pos;
        }
        else update1(L[id], l, mid, pos, val);
    }
    else
    {
        if(!R[id])
        {
            R[id] = ++cur;
            ss[R[id]] = val;
            lazy[R[id]] = pos;
        }
        else update1(R[id], mid + 1, r, pos, val);
    }
    ll s1 = 0, s2 = 0;
    if(L[id]) s1=ss[L[id]];
    if(R[id]) s2=ss[R[id]];
    ss[id] = gcd(s1, s2);
}
ll get1(int id, int l, int r, int a, int b)
{
    if(a>r || l>b) return 0;
    if(a<=l && r<=b) return ss[id];
    if(lazy[id])
    {
        if(a<=lazy[id] && lazy[id]<=b) return ss[id];
        else return 0;
    }
    int mid=(l+r)>>1;
    ll s1=0, s2=0;
    if(L[id]) s1 = get1(L[id], l, mid, a, b);
    if(R[id]) s2 = get1(R[id], mid+1, r, a, b);
    return gcd(s1, s2);
}
void update2(int id, int l, int r, int i, int x, ll val)
{
    if(l==r)
    {
        if (!root[id]) root[id] = ++cur;
        update1(root[id], 1, n, x, val);
    }
    else
    {
        int mid = (l + r) >> 1;
        if (i <= mid)
        {
            if (!L[id]) L[id] = ++cur;
            update2(L[id], l, mid, i, x, val);
        }
        else
        {
            if (!R[id]) R[id] = ++cur;
            update2(R[id], mid + 1, r, i, x, val);
        }
        ll s1 = 0, s2 = 0;
        if(L[id]) s1 = get1(root[L[id]], 1, n, x, x);
        if(R[id]) s2 = get1(root[R[id]], 1, n, x, x);
        ll s3 = gcd(s1, s2);
        if(!root[id]) root[id] = ++cur;
        update1(root[id], 1, n, x, s3);
    }
}
ll get2(int id, int l, int r, int a, int b, int u, int v)
{
    if(a>r || l>b) return 0;
    if(a<=l && r<=b)
    {
        if (root[id]) return get1(root[id], 1, n, u, v);
        else return 0;
    }
    else
    {
        int mid=(l+r)>>1;
        ll s1 = 0, s2 = 0;
        if (L[id]) s1 = get2(L[id], l, mid, a, b, u, v);
        if (R[id]) s2 = get2(R[id], mid+1, r, a, b, u, v);
        return gcd(s1, s2);
    }
}
void init(int R, int C)
{
    m=R;
    n=C;
    //ioi kho nhu cai dau khac
}

void update(int P, int Q, long long K)
{
    update2(1, 1, m, P+1, Q+1, K);
}

long long calculate(int P, int Q, int U, int V)
{
    return get2(1, 1, m, P+1, Q+1, U+1, V+1);
}

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