Submission #531251

#	Time	Username	Problem	Language	Result	Execution time	Memory
531251		kaxzert	Cloud Computing (CEOI18_clo)	C++17	100 / 100	1690 ms	2124 KiB

clo

/**
      ⚡⚡  ⚡⚡      ⚡⚡⚡     ⚡⚡  ⚡⚡  ⚡⚡⚡⚡⚡⚡  ⚡⚡⚡⚡⚡   ⚡⚡⚡⚡⚡⚡  ⚡⚡⚡⚡⚡⚡
      ⚡⚡ ⚡⚡      ⚡⚡⚡⚡      ⚡⚡ ⚡⚡     ⚡⚡   ⚡⚡      ⚡⚡  ⚡⚡  ⚡⚡⚡⚡⚡⚡
      ⚡⚡⚡⚡      ⚡⚡  ⚡⚡      ⚡⚡      ⚡⚡    ⚡⚡⚡⚡⚡   ⚡⚡⚡⚡⚡⚡    ⚡⚡
      ⚡⚡ ⚡⚡    ⚡⚡⚡⚡⚡⚡⚡⚡   ⚡⚡ ⚡⚡    ⚡⚡     ⚡⚡      ⚡⚡  ⚡⚡    ⚡⚡
      ⚡⚡  ⚡⚡  ⚡⚡     ⚡⚡  ⚡⚡  ⚡⚡  ⚡⚡⚡⚡⚡⚡   ⚡⚡⚡⚡⚡   ⚡⚡   ⚡⚡   ⚡⚡
**/

#include<bits/stdc++.h>

using namespace std;

#define fto(i, a, b) for(int i = a; i <= b; ++i)
#define fdto(i, a, b) for(int i = a; i >= b; --i)
#define bugarr(a, i, j) cout << #a << "{" << i << "..." << j << "}:"; fto(k, i, j-1) cout << a[k] << ", "; cout << a[j] << endl;
#define ll long long
#define db double
#define ldb long double
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define vt vector
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define trav(i, a) for(auto &i : a)
#define sz(a) (int)a.size()
#define pi(a, b) pair<a, b>
#define fast ios::sync_with_stdio(false); cin.tie(0)

void setIO(string s) {
    if (sz(s) != 0) {
        freopen((s+".inp").c_str(),"r",stdin);
        freopen((s+".out").c_str(),"w",stdout);
    }
}

void setIOusaco(string s) {
    if (sz(s) != 0) {
        freopen((s+".in").c_str(),"r",stdin);
        freopen((s+".out").c_str(),"w",stdout);
    }
}

template<typename T, typename V>
bool ckmin(T &a, V b) {return (b < a)? a = b, true : false;}
template<typename T, typename V>
bool ckmax(T &a, V b) {return (b > a)? a = b, true : false;}

int main() {
    #ifndef TAP 
    setIO("");
    //setIOusaco("CEOI18_clo");
    #endif

    fast;
    int n;
    vt<array<ll, 3> > a;
    cin >> n;
    ll mx = 0;
    fto(i, 1, n) {
        ll x, y, z;
        cin >> x >> y >> z;
        z = -z;
        a.pb({x, y, z});
        mx += x;
    }

    int m;
    cin >> m;
    fto(i, 1, m) {
        ll x, y, z;
        cin >> x >> y >> z;
        x = -x;
        a.pb({x, y, z});
    }

    sort(all(a), [](array<ll, 3> a, array<ll, 3> b) {
        return (a[1] != b[1] ? a[1] > b[1]: a[2] < b[2]);
    });

    vt<ll> f(mx+1, -1e15);
    f[0] = 0;
    trav(c, a) {
        vt<ll> nf(f);
        fto(i, 0, mx) {
            int newcore = i+c[0];
            if (newcore < 0 || newcore > mx) continue;
            nf[newcore] = max(nf[newcore], f[i]+c[2]);
        }
        f = nf;
    }

    cout << *max_element(all(f)) << '\n';

    return 0;
}

Compilation message (stderr)

clo.cpp: In function 'void setIO(std::string)':
clo.cpp:34:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |         freopen((s+".inp").c_str(),"r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:35:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   35 |         freopen((s+".out").c_str(),"w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp: In function 'void setIOusaco(std::string)':
clo.cpp:41:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         freopen((s+".in").c_str(),"r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:42:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         freopen((s+".out").c_str(),"w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 18 / 18
• Subtask 2: 18 / 18
• Subtask 3: 18 / 18
• Subtask 4: 18 / 18
• Subtask 5: 18 / 18
• Subtask 6: 10 / 10