Submission #641771

#	Time	Username	Problem	Language	Result	Execution time	Memory
641771		finn__	Happiness (Balkan15_HAPPINESS)	C++17	0 / 100	396 ms	524288 KiB

happiness

#include <bits/stdc++.h>
using namespace std;

#include "happiness.h"

struct tnode
{
    int64_t t;
    tnode *l, *r;
    uint64_t x, y;

    void *new_node()
    {

        if (!l)
        {
            l = new tnode;
            l->l = 0;
            l->r = 0;
            l->t = 0;
            l->x = x;
            l->y = (x + y) / 2;
        }

        if (!r)
        {
            r = new tnode;
            r->l = 0;
            r->r = 0;
            r->t = 0;
            r->x = (x + y) / 2 + 1;
            r->y = y;
        }
    }

    void update(uint64_t i, int64_t v)
    {
        if (x == i && y == i)
            t += v;
        else
        {
            new_node();

            if (i <= (x + y) / 2)
                l->update(i, v);
            else
                r->update(i, v);

            t = l->t + r->t;
        }
    }

    int64_t range_sum(uint64_t i, uint64_t j)
    {
        if (y < i || x > j)
            return 0;
        if (i <= x && y <= j)
            return t;
        else
        {
            new_node();
            return l->range_sum(i, j) + r->range_sum(i, j);
        }
    }
};

tnode *root;

bool check()
{
    int64_t curr = 1, sum = root->t;
    while (curr < sum)
    {
        int64_t v = root->range_sum(1, curr);
        if (v < curr)
            return 0;
        curr = v + 1;
    }
    return 1;
}

bool init(int coinsCount, long long maxCoinSize, long long coins[])
{
    root = new tnode;
    root->t = 0;
    root->x = 0;
    root->y = maxCoinSize + 1;
    root->l = 0;
    root->r = 0;
    for (int i = 0; i < coinsCount; i++)
        root->update(coins[i], coins[i]);
    return check();
}
bool is_happy(int event, int coinsCount, long long coins[])
{
    for (int i = 0; i < coinsCount; i++)
        root->update(coins[i], event * coins[i]);
    return check();
}

Compilation message (stderr)

happiness.cpp: In member function 'void* tnode::new_node()':
happiness.cpp:34:5: warning: no return statement in function returning non-void [-Wreturn-type]
   34 |     }
      |     ^
grader.cpp: In function 'int main()':
grader.cpp:16:12: warning: unused variable 'max_code' [-Wunused-variable]
   16 |  long long max_code;
      |            ^~~~~~~~

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