Submission #78742

#	Time	Username	Problem	Language	Result	Execution time	Memory
78742		Plurm	Treasure (different grader from official contest) (CEOI13_treasure2)	C++11	44 / 100	19 ms	1240 KiB

treasure

#include <bits/stdc++.h>
#include "treasure.h"
using namespace std;
int knownval[128][128];
class Hasher{
public:
	const size_t operator()(const tuple<int,int,int,int>& x) const{
		return get<0>(x) + get<1>(x) + get<2>(x) + get<3>(x);
	}
};
unordered_map<tuple<int,int,int,int>,int,Hasher> cache;
int n;
int getval(int a,int b,int c,int d){
	if(a > c || b > d || a == 0 || b == 0 || c == 0 || d == 0 || a == n+1 || b == n+1 || c == n+1 || d == n+1) return 0;
	if(cache.find(make_tuple(a,b,c,d)) == cache.end()){
		int res = countTreasure(a,b,c,d);
		cache[make_tuple(a,b,c,d)] = res;
		return res;
	}else{
		return cache[make_tuple(a,b,c,d)];
	}
}
int dp[128][128];
void findTreasure(int N){
	memset(knownval,-1,sizeof(knownval));
	n = N;
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= n; j++){
			knownval[i][j] = getval(1,1,n,n) - (dp[i-1][j] + getval(1,j+1,n,n) - getval(i+1,j+1,n,n) + getval(i,1,n,n) - getval(i,j,n,n) + getval(i+1,j,n,n));
			dp[i][j] = dp[i-1][j] + dp[i][j-1] - dp[i-1][j-1] + knownval[i][j];
		}
	}
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= n; j++){
			if(knownval[i][j] == 1){
				Report(i,j);
			}
		}
	}
}

• Subtask 1: 44 / 100