Submission #1268022

#	Time	Username	Problem	Language	Result	Execution time	Memory
1268022		hoa208	Cloud Computing (CEOI18_clo)	C++20	100 / 100	297 ms	1352 KiB

clo

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i++)
#define FORD(i, b, a) for (int i = (b), _a = (a); i >= _a; i--)
#define pa pair<ll, ll>
#define fi first
#define se second
#define bit(mask, j) ((mask >> j) & 1)
const   ll mod = 1e9 + 7;
const   ll INF = 1e18;
//--------------------------------------------------------------------

ll n, m;
const ll N = 4003;
struct state {
    ll c, f, v, id;
    bool operator < (const state &a) const {
        return f > a.f || f == a.f && id < a.id;
    }
};
state a[N];
ll c[N];
ll dp[100003];
void hbmt() {
    cin >> n;
    FOR(i, 1, n) {
        cin >> a[i].c >> a[i].f >> a[i].v;
        a[i].id = 1;
    }
    cin >> m;
    FOR(i, n + 1, m + n) {
        cin >> a[i].c >> a[i].f >> a[i].v;
        a[i].id = 2;
    }
    sort(a + 1, a + n + m + 1);
    memset(dp, -0x3f, sizeof dp);
    dp[0] = 0;
    FOR(i, 1, n + m) {
        if(a[i].id == 1) {
            FORD(j, 1e5, a[i].c) {
                if(dp[j - a[i].c] > -INF)
                    dp[j] = max(dp[j], dp[j - a[i].c] - a[i].v);
            }
        }
        else {
            FOR(j, 0,  (ll)1e5 - a[i].c) {
                if(dp[j + a[i].c] > -INF)
                    dp[j] = max(dp[j], dp[j + a[i].c] + a[i].v);
            }
        }
    }
    cout << *max_element(dp, dp + (ll)1e5 + 1);
}

int main() {
    
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);

    #define NAME "hbmt"
    if(fopen(NAME".inp", "r")) {
        freopen(NAME".inp", "r", stdin);
        freopen(NAME".out", "w", stdout);
    }
    
    //int t;cin>>t;while(t--)
    hbmt();
    return 0;
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:63:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |         freopen(NAME".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:64:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   64 |         freopen(NAME".out", "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