Submission #332432

#	Time	Username	Problem	Language	Result	Execution time	Memory
332432		giorgikob	Packing Biscuits (IOI20_biscuits)	C++14	0 / 100	3 ms	364 KiB

biscuits

#include<bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define pb push_back
using namespace std;

#include "biscuits.h"

const int K = 61;

long long count_tastiness(long long x, std::vector<long long> a) {

    vector<ll>dp(K,0);
    dp[0] = 1;
    ll sum = a[0];
    for(ll i = 1; i < K; i++){
        ll p = (1LL<<i);
        ll y = min(sum, (p-1)*x);
        //cout << sum << " " << y << endl;
        int k = i-1;
        while(y >= 0 && k >= 0){
            dp[i] += dp[k];
            y -= x*(1LL<<k);
            //cout << y << endl;
            if(y < x && y >= 0){
                dp[i]++;
                break;
            }
            while((1LL<<k)*x > y) k--;
        }
        //cout << dp[i] << endl;
        if(i < a.size())sum += a[i]*p;
    }
    return dp[K-1];
}

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:33:14: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |         if(i < a.size())sum += a[i]*p;
      |            ~~^~~~~~~~~~

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