Submission #909696

#	Time	Username	Problem	Language	Result	Execution time	Memory
909696		JakobZorz	Game (IOI13_game)	C++17	80 / 100	2898 ms	256000 KiB

game

#include"game.h"
#include<vector>
#include<iostream>
using namespace std;
typedef long long ll;

const int TREE_SIZE=1<<30;

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

// ===============================================================
// ===============================================================
// ===============================================================

struct Tree1{
    ll val;
    int ch1,ch2;
    Tree1():val(0),ch1(-1),ch2(-1){}
};

int num1;
Tree1 trees1[9000000];

ll tree1_get_val(int node){
    if(node==-1)
        return 0;
    return trees1[node].val;
}

int tree1_set(int node,int rl,int rr,int x,ll v){
    if(node==-1)
        node=num1++;
    
    if(rl==rr-1){
        trees1[node].val=v;
        return node;
    }
    
    int mid=(rl+rr)/2;
    if(x<mid){
        trees1[node].ch1=tree1_set(trees1[node].ch1,rl,mid,x,v);
    }else{
        trees1[node].ch2=tree1_set(trees1[node].ch2,mid,rr,x,v);
    }
    trees1[node].val=gcd2(tree1_get_val(trees1[node].ch1),tree1_get_val(trees1[node].ch2));
    return node;
}

ll tree1_get(int node,int rl,int rr,int x1,int x2){
    if(node==-1)
        return 0;
    if(x2<=rl||rr<=x1)
        return 0;
    if(x1<=rl&&rr<=x2)
        return trees1[node].val;
    int mid=(rl+rr)/2;
    return gcd2(tree1_get(trees1[node].ch1,rl,mid,x1,x2),tree1_get(trees1[node].ch2,mid,rr,x1,x2));
}

// ===============================================================
// ===============================================================
// ===============================================================

struct Tree2{
    int val;
    int ch1,ch2;
    Tree2():ch1(-1),ch2(-1),val(-1){}
};

int num2;
Tree2 trees2[1000000];

ll tree2_get_val(int node,int x1,int x2){
    if(node==-1)
        return 0;
    return tree1_get(trees2[node].val,0,TREE_SIZE,x1,x2);
}

int tree2_set(int node,int rl,int rr,int x,int y,ll v){
    if(node==-1)
        node=num2++;
    
    if(rl==rr-1){
        trees2[node].val=tree1_set(trees2[node].val,0,TREE_SIZE,x,v);
        return node;
    }
    
    int mid=(rl+rr)/2;
    if(y<mid){
        trees2[node].ch1=tree2_set(trees2[node].ch1,rl,mid,x,y,v);
    }else{
        trees2[node].ch2=tree2_set(trees2[node].ch2,mid,rr,x,y,v);
    }
    ll val=gcd2(tree2_get_val(trees2[node].ch1,x,x+1),tree2_get_val(trees2[node].ch2,x,x+1));
    trees2[node].val=tree1_set(trees2[node].val,0,TREE_SIZE,x,val);
    return node;
}

ll tree2_get(int node,int rl,int rr,int x1,int x2,int y1,int y2){
    if(node==-1)
        return 0;
    if(y2<=rl||rr<=y1)
        return 0;
    if(y1<=rl&&rr<=y2)
        return tree1_get(trees2[node].val,0,TREE_SIZE,x1,x2);
    int mid=(rl+rr)/2;
    return gcd2(tree2_get(trees2[node].ch1,rl,mid,x1,x2,y1,y2),tree2_get(trees2[node].ch2,mid,rr,x1,x2,y1,y2));
}

// ===============================================================
// ===============================================================
// ===============================================================

void init(int h,int w){
    num2=1;
}

void update(int y,int x,ll v){
    tree2_set(0,0,TREE_SIZE,x,y,v);
}

ll calculate(int y1,int x1,int y2,int x2){
    return tree2_get(0,0,TREE_SIZE,x1,x2+1,y1,y2+1);
}

Compilation message (stderr)

game.cpp: In constructor 'Tree2::Tree2()':
game.cpp:74:13: warning: 'Tree2::ch2' will be initialized after [-Wreorder]
   74 |     int ch1,ch2;
      |             ^~~
game.cpp:73:9: warning:   'int Tree2::val' [-Wreorder]
   73 |     int val;
      |         ^~~
game.cpp:75:5: warning:   when initialized here [-Wreorder]
   75 |     Tree2():ch1(-1),ch2(-1),val(-1){}
      |     ^~~~~

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