Submission #153734

#	Time	Username	Problem	Language	Result	Execution time	Memory
153734		youssefbou62	Game (IOI13_game)	C++14	37 / 100	13095 ms	30028 KiB

game

#include <bits/stdc++.h>
#include "game.h"
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std; 
using ll = long long ; 

struct chash {
    const int RANDOM = (long long)(make_unique<char>().get()) ^ chrono::high_resolution_clock::now().time_since_epoch().count();
    static unsigned long long hash_f(unsigned long long x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }
    static unsigned hash_combine(unsigned a, unsigned b) { return a * 31 + b; }
    int operator()(int x) const { return hash_f(x)^RANDOM; }
};
const int N = 2005; 
unordered_map<int,unordered_map<int,ll,chash>,chash>  st;  
int ROW , COL ; 
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;
}
int l(int u){return (u*2+1);}
int r(int u ){return (u*2+2);}
void init(int n, int m){
	ROW = n ; 
	COL = m ; 
}
ll get(int C , int R ){
	if( st.find(C)!=st.end()){
		if( st[C].find(R) != st[C].end() )return st[C][R];
	}return 0; 
}
void updateColumn(int nodeC , int row , int L , int R , int u ,bool isleaf, ll val ){
	if( L == R ){
		// cout << isleaf<<"before update="<<st[nodeC][u]<<endl;
		if( isleaf )
			st[nodeC][u]=val ;
		else {
			st[nodeC][u]= gcd2(get(l(nodeC),(u)),get(r(nodeC),u));
		}
		// cout << "after update="<<st[nodeC][u]<<endl;
		return ; 
	}
	int mid = (L+R)/2 ; 
	if( row <= mid )updateColumn(nodeC,row,L,mid,l(u),isleaf,val); 
	else updateColumn(nodeC,row,mid+1,R,r(u),isleaf,val); 
	ll g=gcd2(get(nodeC,l(u)),get(nodeC,r(u))); 
	if( g )
	st[nodeC][u] = g ; 
}
void UPDATE(int nodeC,int row,int Column ,int L , int R , ll val ){

	if( L != R ){
		int mid = (L+R)/2 ;
		if( Column <= mid ) 
		UPDATE(l(nodeC),row,Column,L,mid,val); 
		else UPDATE(r(nodeC),row,Column,mid+1,R,val);
	}

	updateColumn(nodeC,row,0,ROW-1,0,(L==R),val);
}
ll queryColumn(int nodeC , int qlR, int qrR , int L , int R , int u=0 ){
	// cout << " u = "<<u<<" l(u)= "<<l(u)<<" r= "<<r(u) << endl; 

	if( L >= qlR && R <= qrR ){
		// cout << L << " " << R << " COL = "<<st[nodeC][u]<<endl; 
		return get(nodeC,u); 
	}
	int mid = (L+R)/2; 
	if( L > qrR || R < qlR || L > R)return 0; 
	return gcd2(queryColumn(nodeC,qlR,qrR,L,mid,l(u)),queryColumn(nodeC,qlR,qrR,mid+1,R,r(u))); 
}


ll QUERY (int qlR , int qrR , int qlC , int qrC , int L , int R , int u=0 )
{
	// cout << qlC << " " << qrC << endl; 
	if( L >= qlC &&  R <= qrC){
		// cout << qlR << " " << qrR<<" | " <<" L = "<<L<<" R="<<R<<" quer = "<<queryColumn(u,qlR,qrR,0,ROW-1)<<endl; 
		return queryColumn(u,qlR,qrR,0,ROW-1); 
	}
	if( L > qrC || R < qlC || L > R)return 0; 
	int mid = (L+R)/2; 
	return gcd2(QUERY(qlR , qrR , qlC , qrC , L , mid , l(u)),QUERY(qlR , qrR , qlC , qrC ,mid+1, R, r(u))) ;
}
void update(int P , int Q , ll val ){
	// p is row 
	UPDATE(0,P,Q,0,COL-1,val); 
}

ll calculate(int P , int Q , int U , int V){
	return QUERY(P,U,Q,V,0,COL-1); 
}
// int main(){
// 	// cout << (sizeof (st)) << endl; 
// 	int n , m , X ; 
// 	cin >> n >> m >> X;
// 	init(n,m);  
// 	for(int i = 0 ; i < X ; i++ ){
// 		int type ; 
// 		cin >> type ; 
// 		if( type == 1 ){
// 			int P, Q ; ll K ; 
// 			cin >> P >> Q >> K ; //cout << "UPDATE *******"<<endl;
// 			update(P,Q,K);
// 		}else {
// 			int P,Q,U,V; 
// 			cin >> P >> Q >> U >> V; 
// 			// cout <<"***********"<<endl; 
// 			cout << calculate(P,Q,U,V)<<endl; 
// 		}
// 	}
// 	// cout << (sizeof (st)) << endl; 
// }	

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:18:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
  int res;
      ^~~

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