Submission #369102

#	Time	Username	Problem	Language	Result	Execution time	Memory
369102		rumen_m	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	1 ms	620 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;
vector <long long> b;
map <long long, long long> mp;
long long solve(long long x, long long n)
{
    if(n<=0)return 0;
    if(n==1)return 1;
    if(mp.find(n)!=mp.end())
        return mp[n];
        long long a = __lg(n-1);
    long long ans = solve(x,(1<<a)) + solve(x, min(n, b[a]/x + 1)-(1<<a));
    mp[n] = ans;
    return ans;
}
long long count_tastiness(long long x, std::vector<long long> a) {
    int i,j;
    b.clear();
    mp.clear();
    for(i=0;i<a.size();i++)
    {
        if(i)
        a[i] = a[i-1] + a[i]*(1<<i);
        b.push_back(a[i]);
    }
    for(;i<=63;i++)
        b.push_back(b.back());
    long long ans = solve(x,b.back()+1);

}

Compilation message (stderr)

biscuits.cpp: In function 'long long int solve(long long int, long long int)':
biscuits.cpp:10:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   10 |     if(mp.find(n)!=mp.end())
      |     ^~
biscuits.cpp:12:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   12 |         long long a = __lg(n-1);
      |         ^~~~
biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:21:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(i=0;i<a.size();i++)
      |             ~^~~~~~~~~
biscuits.cpp:18:11: warning: unused variable 'j' [-Wunused-variable]
   18 |     int i,j;
      |           ^
biscuits.cpp:29:15: warning: unused variable 'ans' [-Wunused-variable]
   29 |     long long ans = solve(x,b.back()+1);
      |               ^~~
biscuits.cpp:31:1: warning: no return statement in function returning non-void [-Wreturn-type]
   31 | }
      | ^

• Subtask 1: 0 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23