Submission #531053

#	Time	Username	Problem	Language	Result	Execution time	Memory
531053		kaxzert	Cloud Computing (CEOI18_clo)	C++17	54 / 100	184 ms	262148 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;}

const int maxN = 2004;
ll f[maxN][maxN][53];
int n, m;
array<ll, 3> buy[maxN], sold[maxN];

ll dp(int i, int j, int k) {
    assert(k <= 50);
    if (j > m) return 0;
    if (f[i][j][k] != -1) return f[i][j][k];
    if (i > n) {
        ll res = dp(i, j+1, k);
        if (sold[j][0] <= k) res = max(res, dp(i, j+1, k-sold[j][0])+sold[j][2]);
        return f[i][j][k] = res;
    }

    ll res = max({dp(i+1, j, k), dp(i, j+1, k), 0LL});
    if (k >= sold[j][0]) {
        res = max(res, dp(i, j+1, k-sold[j][0]) + sold[j][2]);
    } else {
        if (buy[i][1] >= sold[j][1]) {
            if (buy[i][0]+k < sold[j][0]) {
                res = max(res, dp(i+1, j, buy[i][0]+k)-buy[i][2]);
            } else {
                res = max(res, dp(i+1, j+1, buy[i][0]+k-sold[j][0])-buy[i][2]+sold[j][2]);
            }
        }
    }

    return f[i][j][k] = res;
}

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

    fast;
    cin >> n;
    fto(i, 1, n) {
        cin >> buy[i][0] >> buy[i][1] >> buy[i][2];
    }
    sort(buy+1, buy+1+n, [](array<ll, 3> a, array<ll, 3> b){
        return a[1] > b[1];
    });

    cin >> m;
    fto(i, 1, m) {
        cin >> sold[i][0] >> sold[i][1] >> sold[i][2];
    }

    sort(sold+1, sold+m+1, [](array<ll, 3> a, array<ll, 3> b) {
        return a[1] > b[1];
    });

    fto(i, 1, n+1) {
        fto(j, 1, m) {
            fto(k, 0, 50) f[i][j][k] = -1;
        }
    }

    cout << dp(1, 1, 0) << '\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: 0 / 18
• Subtask 5: 0 / 18
• Subtask 6: 0 / 10