Submission #736864

#	Time	Username	Problem	Language	Result	Execution time	Memory
736864		MODDI	Happiness (Balkan15_HAPPINESS)	C++14	60 / 100	1042 ms	129756 KiB

happiness

#include "happiness.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
long long mx;
struct Node{
	long long sum;
	int l, r;
	Node() : sum(0), l(-1), r(-1){}
};
Node tree[20*201000];
int cnt = 2;
void update(int node, long long pos, long long add, long long l, long long r){
	if(l == r && l == pos){
		tree[node].sum += add;
	}
	else{
		long long mid = (l+ r) / 2;
		if(tree[node].l == -1){
			tree[node].l = cnt++;
		}
		if(tree[node].r == -1){
			tree[node].r = cnt++;
		}
		if(pos <= mid){
			update(tree[node].l, pos, add, l, mid);
		}
		else
			update(tree[node].r, pos, add, mid+1, r);
			
		tree[node].sum = tree[tree[node].l].sum + tree[tree[node].r].sum;
	}
}
long long query(int node, long long L, long long R, long long l, long long r){
	if(r < L || l > R)	return 0;
	if(L <= l && r <= R)	return tree[node].sum;
	
	long long mid = (l + r) / 2;
	if(tree[node].l == -1){
		tree[node].l = cnt++;
	}	
	if(tree[node].r == -1)
		tree[node].r = cnt++;
		
	return query(tree[node].l, L, R, l, mid) + query(tree[node].r, L, R, mid+1, r);
}
bool check(){
	long long coin = 1, tot = query(1, 1, mx, 1, 1e12);
	while(coin <= mx){
		long long sum = query(1, 1, coin,1,1e12);
		if(sum + 1 > mx)	return true;
		if(tot == sum)	return true;
		if(query(1, coin+1, sum+1,1,1e12) == 0)	return false;
		coin = sum + 1;
	}
	return true;
}
bool init(int n, long long M, long long a[]){
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	mx = M;
	tree[1].sum = 0;
	for(int i = 0; i < n; i++)
		update(1, a[i], a[i], 1, 1e12);
		
	return check();
}
bool is_happy(int e, int n, long long a[]){
	for(int i = 0; i < n; i++)
		update(1, a[i], a[i]*e, 1, 1e12);
		
	return check();
}

Compilation message (stderr)

grader.cpp: In function 'int main()':
grader.cpp:16:12: warning: unused variable 'max_code' [-Wunused-variable]
   16 |  long long max_code;
      |            ^~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 30 / 30
• Subtask 4: 0 / 40