Submission #745

#	Time	Username	Problem	Language	Result	Execution time	Memory
745		CodingIsHard	올림픽 피자 (tutorial5)	C++98	100 / 100	82 ms	1228 KiB

tutorial5

#include "pizza.h"
#include <queue>
using namespace std;

int num , can;
int rest[8];
queue<int> p[256];

void Init() {}

void process(int pizza)
{
    Bake(p[pizza].front());
    p[pizza].pop();
    for(int i = 0;i < 8;i++)
    {
        if(pizza & (1 << i))
        {
            rest[i]--;
            if(rest[i] == 0)
                can ^= 1 << i;
        }
    }
}

void Order(int N, int *A)
{
    int pizza = 0;
    for(int i = 0;i < N;i++)
        pizza |= 1 << A[i];
    
    p[pizza].push(num++);
    if((pizza & can) == pizza)
        process(pizza);
}

void Delivery(int I)
{
    if(++rest[I] == 1)
        can |= 1 << I;

    while(true)
    {
        int iMin = -1;
        for(int i = 1;i < 256;i++)
        {
            if((i & can) == i && !p[i].empty() && (iMin == -1 || p[i].front() < p[iMin].front()))
                iMin = i;
        }
        
        if(iMin == -1)
            break;
        
        else
            process(iMin);
    }
}

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 20 / 20
• Subtask 4: 30 / 30