Submission #579676

#	Time	Username	Problem	Language	Result	Execution time	Memory
579676		wdjpng	Uplifting Excursion (BOI22_vault)	C++17	0 / 100	758 ms	5540 KiB

vault

#include <bits/stdc++.h>

#define int long long
#define rep(i,n) for(int i = 0; i < n; i++)
#define per(i,n) for(int i = n-1; i >=0; i--)

using namespace std;

signed main()
{
    int m,l;
    cin>>m>>l;
    int maxl=max(l+1,(m)*(m+1)/2*50)+100000;
    vector<int>dp(2*maxl+1, -1);
    dp[maxl]=0;
 
    for(int cl = -m; cl <= m; cl++)
    {
        int a;
        cin>>a;
        rep(whatever,a)
        {
            if(cl>0)
            {
                per(i,2*maxl+1)
                {
                    if(i-cl<0||i-cl>=dp.size()||dp[i-cl]==-1) continue;
                    dp[i]=max(dp[i], dp[i-cl]+1);
                }
            } else
            rep(i,2*maxl+1) 
            {
                if(i-cl<0||i-cl>=dp.size()||dp[i-cl]==-1) continue;
                dp[i]=max(dp[i], dp[i-cl]+1);
            }
        }
    }
    assert(l+maxl<dp.size());
    if(dp[l+maxl]>0) cout<<dp[l+maxl]<<'\n';
    else cout<<"impossible\n";
}

Compilation message (stderr)

vault.cpp: In function 'int main()':
vault.cpp:27:36: 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]
   27 |                     if(i-cl<0||i-cl>=dp.size()||dp[i-cl]==-1) continue;
      |                                ~~~~^~~~~~~~~~~
vault.cpp:33:32: 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-cl<0||i-cl>=dp.size()||dp[i-cl]==-1) continue;
      |                            ~~~~^~~~~~~~~~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from vault.cpp:1:
vault.cpp:38:18: 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]
   38 |     assert(l+maxl<dp.size());
      |            ~~~~~~^~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3-1: 0 / 10
• Subtask 3-2: 0 / 10
• Subtask 4-1: 0 / 10
• Subtask 4-2: 0 / 10
• Subtask 5-1: 0 / 10
• Subtask 5-2: 0 / 10
• Subtask 6-1: 0 / 10
• Subtask 6-2: 0 / 10