Submission #789600

#	Time	Username	Problem	Language	Result	Execution time	Memory
789600		borisAngelov	Packing Biscuits (IOI20_biscuits)	C++17	Compilation error	0 ms	0 KiB

biscuits

#include "biscuits.h"
#include "grader.cpp"
#include <bits/stdc++.h>

using namespace std;

const int maxn = 64;
const long long inf = (1LL << 60) - 1;

int n;
long long x;

long long a[maxn];

struct key
{
    int pos;
    long long mx;

    inline friend bool operator < (const key& x, const key& y)
    {
        return x.pos < y.pos || (x.pos == y.pos && x.mx < y.mx);
    }
};

map<key, long long> dp;

long long s[maxn];

long long f(int pos, long long mx)
{
    if (mx < 0)
    {
        return 0;
    }

    if (pos == -1)
    {
        return 1;
    }

    if (mx > (1LL << pos + 1))
    {
        return 1;
    }

    if (dp.find({pos, mx}) != dp.end())
    {
        return dp[{pos, mx}];
    }

    long long result = f(pos - 1, min(mx, (1LL << pos) - 1));
    result += f(pos - 1, min(mx, s[pos] / x) - (1LL << pos));

    return dp[{pos, mx}] = result;
}

long long count_tastiness(long long X, vector<long long> arr)
{
    dp.clear();
    n = arr.size();
    x = X;

    for (int i = 0; i < n; ++i)
    {
        a[i] = arr[i];
    }

    for (int i = 0; i < maxn; ++i)
    {
        if (i < n)
        {
            s[i] = a[i] * (1LL << i);
        }
        else
        {
            s[i] = 0;
        }

        if (i >= 1)
        {
            s[i] += s[i - 1];
        }
    }

    return f(60, inf);
}

/*
1
3 3
5 2 1

1
3 2
2 1 2

2
3 3
5 2 1
3 2
2 1 2

5 9 13 ... 13
*/

Compilation message (stderr)

biscuits.cpp: In function 'long long int f(int, long long int)':
biscuits.cpp:42:26: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   42 |     if (mx > (1LL << pos + 1))
      |                      ~~~~^~~
/usr/bin/ld: /tmp/ccnlnn3x.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccIrfDdA.o:biscuits.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status