Submission #1066355

#	Time	Username	Problem	Language	Result	Execution time	Memory
1066355		Ahmed57	Packing Biscuits (IOI20_biscuits)	C++17	100 / 100	9 ms	1456 KiB

biscuits

#include "bits/stdc++.h"
using namespace std;
#define int long long
vector<int> A,B;
int lim , X;
long long inf = 1.1e18;
long long count_tastiness(long long x,vector<long long> a){
    A.clear();B.clear();
    for(int i = 0;i<a.size();i++)A.push_back(a[i]);
    int k = A.size();
    int ans = 0;
    for(int i = 0;i<A.size();i++){
        ans/=2;
        ans+=A[i];
    }
    while(ans>0){
        ans/=2;
        A.push_back(0);
    }
    for(int i = 1;i<A.size();i++){
        A[i]*=(1ll<<i);
        A[i]+=A[i-1];
    }
    for(int i = 0;i<A.size();i++){
        A[i]/=x;
    }
    int dp[A.size()+1] = {0};
    dp[0] = 1;
    for(int i = 1;i<=A.size();i++){
        dp[i] = dp[i-1];
        int cur = i-1 , sum = 0;
        int val = A[i-1]-(1ll<<(i-1));
        while(cur>=0){
            if(val<0)break;
            if(val>=(1ll<<cur)-1){
                sum+=dp[cur];
                break;
            }
            val = min(val,A[cur-1]);
            if(val>=(1ll<<(cur-1))){
                sum+=dp[cur-1];
                val=val-(1ll<<(cur-1)); 
                cur--;
            }else{
                cur--;
            }
        }
        dp[i]+=sum;
    }
    return dp[A.size()];
}

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:9:20: 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]
    9 |     for(int i = 0;i<a.size();i++)A.push_back(a[i]);
      |                   ~^~~~~~~~~
biscuits.cpp:12:20: 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]
   12 |     for(int i = 0;i<A.size();i++){
      |                   ~^~~~~~~~~
biscuits.cpp:20:20: 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]
   20 |     for(int i = 1;i<A.size();i++){
      |                   ~^~~~~~~~~
biscuits.cpp:24:20: 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]
   24 |     for(int i = 0;i<A.size();i++){
      |                   ~^~~~~~~~~
biscuits.cpp:29:20: 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]
   29 |     for(int i = 1;i<=A.size();i++){
      |                   ~^~~~~~~~~~
biscuits.cpp:10:9: warning: unused variable 'k' [-Wunused-variable]
   10 |     int k = A.size();
      |         ^

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