Submission #647916

#	Time	Username	Problem	Language	Result	Execution time	Memory
647916		thegamercoder19	Knapsack (NOI18_knapsack)	C++14	73 / 100	1089 ms	3924 KiB

knapsack

/*
Coded by thegamercoder
Happy Competition and Hacking
*/


/*
pragma GCC optimize("O3")
pragma GCC optimize("Ofast, unroll-loops")
pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2")
*/
#define _CRT_SECURE_NO_WARNINGS

#include <bits/stdc++.h>
#define M_PI       3.14159265358979323846
#define FILER 0
using ll = long long;
using ull = unsigned long long;
using ld = long double;
const ll MOD = pow(10, 9) + 7;
const ll INFL = 0x3f3f3f3f3f3f3f3f;
const ull INFUL = 0x3f3f3f3f3f3f3f3f;
const ll INFT = 0x3f3f3f3f;
const ll MAX = 1e7 + 1;
const ll MODD = 998244353;
const double EPS = 1e-10;
#define V vector
#define pll pair<ll, ll>
#define pull2 pair<ull,ull>
#define MS multiset
#define M map
#define Q queue
#define PQ priority_queue
#define IOF ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define FOR(typ,i,a,b,c) for(typ i = a; i < b; i += c)
#define FORR(typ,i,a,b,c) for(typ i = a; i > b; i -= c)
#define FORA(a,i) for(auto &i : a)
#define all(v) v.begin(),v.end()
#define sz(v) v.size()
#define sorta(a) sort(all(a))
#define sortd(a) sort(all(a), greater<ll>())
#define setp(x) setprecision(x)<<fixed
#define RET return
#define log(a,b) log(b)/log(a)
#define WH(s) while(s)
#define WHI(t) WH(t--)
#define YES cout<<"YES"<<endl;
#define NO cout<<"NO"<<endl;
#define Yes cout<<"Yes"<<endl;
#define No cout<<"No"<<endl;
#define YESNO(s) cout<<(s?"YES":"NO")<<endl;
#define YesNo(s) cout<<(s?"Yes":"No")<<endl;
#define TYP 0
using namespace std;
ll n,w;
V<ll> dp;
V<ll>v, ww, k;
void solve()
{
    cin >> w >> n;
    dp.resize(w + 1, 0);
    v.resize(n + 1); ww.resize(n + 1); k.resize(n + 1);
    FOR(ll, i, 1, n + 1, 1)cin >> v[i] >> ww[i] >> k[i];// , k[i] = min(k[i], w / ww[i]);
    FOR(ll, i, 1, n + 1, 1)
        FORR(ll, j, w,0, 1)

        FOR(ll, q, 1, min(k[i], j / ww[i]) + 1, 1)
            dp[j] = max({ dp[j],dp[j - q * ww[i]] + q * v[i],dp[j] }); 
    cout << dp[w] << endl;
}
void init()
{


    if (FILER) {
        freopen("feast.in", "r", stdin);
        freopen("feast.out", "w", stdout);
    }


}

void handle(bool f)
{
    init();
    if (f) { ll t;  cin >> t; WHI(t)solve(); return; }
    solve();
}
int main()
{
    IOF

        handle(TYP);
    RET 0;
}

Compilation message (stderr)

knapsack.cpp: In function 'void init()':
knapsack.cpp:76:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |         freopen("feast.in", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:77:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   77 |         freopen("feast.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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