Submission #307024

#	Time	Username	Problem	Language	Result	Execution time	Memory
307024		VROOM_VARUN	Cloud Computing (CEOI18_clo)	C++14	100 / 100	585 ms	1528 KiB

clo

#include <cstdio>
#include <vector>
#include <algorithm>

using namespace std;

struct Event {
  enum Type { Processor, Task };
  Type type;
  int cores, frequency, price;
  Event(Type type, int cores, int frequency, int price)
      : type(type), cores(cores), frequency(frequency), price(price) { }
};

const int MAXN = 2005, MAXC = 55, MAXDP = MAXN*MAXC;
const long long int INF = 1000000000000000000LL; // 10^18
int n,m;
vector<Event> events;
long long int dp[MAXDP];

bool comp(const Event& event1, const Event& event2) {
  if (event1.frequency == event2.frequency)
    return event1.type < event2.type;
  return event1.frequency > event2.frequency;
}

int main() {
  scanf("%d", &n);
  for (int i = 0; i < n; ++i) {
    int c,f,v;
    scanf("%d%d%d", &c, &f, &v);
    events.push_back(Event(Event::Processor,c,f,v));
  }
  scanf("%d", &m);
  for (int i = 0; i < m; ++i) {
    int c,f,v;
    scanf("%d%d%d", &c, &f, &v);
    events.push_back(Event(Event::Task,c,f,v));
  }

  sort(events.begin(), events.end(), comp);

  for (int i = 0; i < MAXDP; ++i)
    dp[i] = -INF;
  dp[0] = 0;

  for (int i = 0; i < (int)events.size(); ++i)
    if (events[i].type == Event::Processor)
      for (int j = MAXDP-1; j >= 0; --j) {
        int index = j + events[i].cores;
        long long int value = dp[j] - events[i].price;
        if (index < MAXDP && dp[index] < value)
          dp[index] = value;
      }
    else
      for (int j = 0; j < MAXDP; ++j) {
        int index = j - events[i].cores;
        long long int value = dp[j] + events[i].price;
        if (index >= 0 && dp[j] != -INF && dp[index] < value)
          dp[index] = value;
      }

  long long int result = 0;
  for (int i = 0; i < MAXDP; ++i)
    result = max(result, dp[i]);

  printf("%lld\n", result);
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:28:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   28 |   scanf("%d", &n);
      |   ~~~~~^~~~~~~~~~
clo.cpp:31:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   31 |     scanf("%d%d%d", &c, &f, &v);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
clo.cpp:34:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   34 |   scanf("%d", &m);
      |   ~~~~~^~~~~~~~~~
clo.cpp:37:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   37 |     scanf("%d%d%d", &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