Submission #487558

#	Time	Username	Problem	Language	Result	Execution time	Memory
487558		freddy645645	Knapsack (NOI18_knapsack)	C++17	100 / 100	57 ms	2884 KiB

knapsack

#include <bits/stdc++.h>
#include <bits/extc++.h>

//#define double long double
#define IOS ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(nullptr);
#define pb push_back
#define UNIQUE(a) sort(ALL(a));a.resize(unique(ALL(a))-a.begin());
#define ALL(X) X.begin(),X.end()
#define F(i,n)  FF(i,0,(n))
#define F1(i,n)  FF(i,1,(n)+1)
#define FF(i,n,m) for(int i=(int)n;i<int(m);++i)
#define rF(i,a,b) for(int i=a;i>=(int)b;--i)
#define mkp(a,b) make_pair(a,b)
#define Fi first
#define Se second
#define int ll
//#pragma GCC optimize("O3")//,unroll-loops
//#pragma GCC target("popcnt")

using namespace std;

template<typename T> bool remax(T& a, const T& b) {return b>a?a=b,1:0;}
template<typename T> bool remin(T& a, const T& b) {return b<a?a=b,1:0;}
using ll=long long;
using ull=unsigned long long;
using int128= __int128_t;
using uint128= __uint128_t;
using pii =pair<int,int> ;
const double pi=acos(-1);
const int N=2000+5;
const ll M=105;
const ll INF_64=0x3f3f3f3f3f3f3f3f;
const int INF_32=0x3f3f3f3f;
const int16_t INF_16=0x3f3f;
const int klog=20;
const int mod=1000000007;//1000000007;//998244353
const double eps=1E-3;
void gen(){
}
int dp[N];
vector<pii> a[N];
void sol(){
    int s,n;cin>>s>>n;
    F(i,n){
        int v,w,k;
        cin>>v>>w>>k;
        a[w].pb({v,k});
    }
    F1(w,s){
        sort(ALL(a[w]),greater<pii>());
        int id=0;
        F(j,s/w){
            if(id>=a[w].size()) break;
            for(int k=s;k>=w;--k)
                remax(dp[k],dp[k-w]+a[w][id].Fi);
            if(--a[w][id].Se==0) ++id;
        }
    }
    cout<<*max_element(dp,dp+s+1)<<"\n";
}


int32_t main(){
    #ifdef LOCAL
    //freopen(".in","r",stdin);
    //freopen(".out","w",stdout);
    #endif // LOCAL
    IOS;
    int t=1;
    gen();
    //cin>>t;
    FF(i,1,t+1){
        //cout<<"Case #"<<i<<": ";
        sol();
    }
}

Compilation message (stderr)

knapsack.cpp: In function 'void sol()':
knapsack.cpp:53:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |             if(id>=a[w].size()) break;
      |                ~~^~~~~~~~~~~~~

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