Submission #1092400

#	Time	Username	Problem	Language	Result	Execution time	Memory
1092400		iloveroseanne	Knapsack (NOI18_knapsack)	C++14	37 / 100	20 ms	6492 KiB

knapsack

/// PARK CHAEYOUNG IS MY LOVE
/// Author: Ngo Ba Van
/// roses_are_rosie
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define se second
#define MASK(i) (1LL<<i)
#define BIT(x,i) (x&MASK(i))
#define ONBIT(x,i) (x|MASK(i))
#define OFFBIT(x,i) (x&~MASK(i))
#define COUNT(x) (__builtin_popcount(x))
#define RVAN1102 signed main()
using ii=pair<int,int>;
const ll N=1e5+5,M=1e9+7;
ll n,m,res,dp[N][2005];
vector<ii>b;
struct cmp
{
    int x,y,z;
}a[N];
void phantich(int id,ll n)
{
    int c=0;
    while (n-MASK(c)>0)
    {
        b.push_back({a[id].x*MASK(c),a[id].y*MASK(c)});
        n-=MASK(c);
        c++;
    }
    if (n>0) b.push_back({a[id].x*n,a[id].y*n});
}
void nhap()
{
    b.push_back({0,0});
    cin>>n>>m;
    for (int i=1;i<=m;i++)
    cin>>a[i].x>>a[i].y>>a[i].z,
    phantich(i,a[i].z);
    ///
    for (int j=0;j<=n;j++)
    {
        for (int i=1;i<b.size();i++)
        if (j-b[i].se>=0)
        dp[i][j]=max(dp[i-1][j],dp[i-1][j-b[i].se]+b[i].fi);
        else
            dp[i][j]=dp[i-1][j];
    }
    cout<<dp[b.size()-1][n];
}
RVAN1102 {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
#define task ""
#define task "a"
if(fopen(task".inp","r"))
{
    freopen(task".inp","r",stdin);
    freopen(task".out","w",stdout);
}
int t=1;
//cin>>t;
while (t--)
nhap();
}

Compilation message (stderr)

knapsack.cpp:56: warning: "task" redefined
   56 | #define task "a"
      | 
knapsack.cpp:55: note: this is the location of the previous definition
   55 | #define task ""
      | 
knapsack.cpp: In function 'void nhap()':
knapsack.cpp:44:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |         for (int i=1;i<b.size();i++)
      |                      ~^~~~~~~~~
knapsack.cpp: In function 'int main()':
knapsack.cpp:59:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |     freopen(task".inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:60:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |     freopen(task".out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 0 / 24
• Subtask 5: 0 / 27