Submission #399403

#	Time	Username	Problem	Language	Result	Execution time	Memory
399403		Victor	Cloud Computing (CEOI18_clo)	C++17	100 / 100	867 ms	2924 KiB

clo

#include <bits/stdc++.h>

using namespace std;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define per(i, a, b) for (int i = b - 1; i >= (a); --i)
#define trav(a, x) for (auto &a : x)

#define all(x) x.begin(), x.end()
#define sz(x) x.size()
#define pb push_back

#define umap unordered_map
#define uset unordered_set

typedef pair<int, int> ii;
typedef pair<int, ii> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef long long ll;

const int INF = 1000000007;

int main() {
    int n, m, c;
    vector<pair<ii, pair<ll, int>>> dpvec;
    ll f, v, sumc = 1, ans = 0;

    cin >> n;
    rep(i, 0, n) {
        scanf("%d %lld %lld", &c, &f, &v);
        dpvec.push_back({{f, 1}, {v, c}});
        sumc += c;
    }

    cin >> m;
    rep(i, 0, m) {
        scanf("%d %lld %lld", &c, &f, &v);
        dpvec.push_back({{f, 0}, {v, c}});
    }

    sort(all(dpvec), greater<>());
    vector<ll> dummy(sumc, -1e15), dp = dummy, dp2 = dp;
    dp[0] = 0;

    trav(item, dpvec) {
        int query;
        tie(f, query) = item.first;
        tie(v, c) = item.second;
        ll mx=-1e15;

        per(i, 0, sumc) {

            if (dp[i]<=mx) continue;
            mx=max(mx,dp[i]);

            dp2[i] = max(dp2[i], dp[i]);
            if (query)
                dp2[i + c] = max(dp2[i + c], dp[i] - v);
            else if (!query && c <= i)
                dp2[i - c] = max(dp2[i - c], dp[i] + v);
        }

        dp.swap(dp2);
        dp2 = dummy;
    }

    trav(val, dp) ans = max(ans, val);

    printf("%lld\n", ans);
    return 0;
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:32:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   32 |         scanf("%d %lld %lld", &c, &f, &v);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
clo.cpp:39:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   39 |         scanf("%d %lld %lld", &c, &f, &v);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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