Submission #1046388

#	Time	Username	Problem	Language	Result	Execution time	Memory
1046388		mrwang	Cloud Computing (CEOI18_clo)	C++14	18 / 100	345 ms	1972 KiB

clo

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 2000 + 5;
const int inf = 1e17;
vector<ll> last, curr;
int n, m;
vector<ll> c, f, v, type;
bool cmp(const int &a, const int &b)
{
    if (f[a] != f[b]) return f[a] > f[b];
    return type[a] < type[b];
}
int main()
{
    int cores = 0;
    cin >> n;
    c.resize(4000);
    f.resize(4000);
    v.resize(4000);
    type.resize(4000);

    for(int i = 0; i < n; i++)
    {
        cin >> c[i] >> f[i] >> v[i];
        type[i] = -1;
        cores += c[i];
    }
    cin >> m;
    for(int i = 0; i < m; i++)
    {
        cin >> c[n + i] >> f[n + i] >> v[n + i];
        type[n + i] = 1;
    }

    vector<int> j(n + m);
    for(int i=0;i<n+m;i++) j[i]=i;
    sort(j.begin(), j.end(), cmp);

    last.assign(cores + 5, -inf);
    curr.assign(cores + 5, -inf);
    last[0] = curr[0] = 0;

    for(const int &i : j)
    {
        curr = last;
        if(type[i] == -1)
        {
            for(int j = c[i]; j <= cores; j++)
                curr[j] = max(curr[j], last[j - c[i]] - v[i]);
        }
        else
        {
            for(int j = 0; j <= cores - c[i]; j++)
                curr[j] = max(curr[j], last[j + c[i]] + v[i]);
        }
        last.swap(curr);
    }
    cout << *max_element(last.begin(), last.end());
    return 0;
}

Compilation message (stderr)

clo.cpp:5:17: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+17' to '2147483647' [-Woverflow]
    5 | const int inf = 1e17;
      |                 ^~~~

• Subtask 1: 0 / 18
• Subtask 2: 0 / 18
• Subtask 3: 0 / 18
• Subtask 4: 0 / 18
• Subtask 5: 18 / 18
• Subtask 6: 0 / 10