Submission #336887

#	Time	Username	Problem	Language	Result	Execution time	Memory
336887		seedkin	올림픽 피자 (tutorial5)	C11	70 / 100	1094 ms	3200 KiB

tutorial5

#include "pizza.h"

struct Order {
  int next;
  int prev;
  int need[8];
  int needCnt;
};

int order_num;
int material[8];
struct Order order[100000];
int root = -1;
int last = -1;

int check(int need[8], int needCnt) {
  for(int i =0; i< needCnt; i++) {
    if(material[need[i]] == 0) return 0;
  }
  return 1;
}

void Init() {

  order_num = 0;
  root = -1;
  last = -1;
  for(int i = 0; i < 8; i++) {
    material[i] = 0;
  }
}

void Order(int N, int *A) {

  int r = check(A, N);
  if(r) {
    Bake(order_num);
    order_num++;
    for(int i =0; i < N; i++) {
      material[A[i]]--;
    }
    return;
  }
  
  order[order_num].needCnt = N;
  for(int i =0; i < N; i++) {
    order[order_num].need[i] = A[i];
  }
  order[order_num].next = -1;
  order[order_num].prev = -1;

  if(root == -1) {
    root = order_num;
    last = order_num;
    order_num++;
    return;
  }

  // int cur = root;
  // int prev = -1
  // while(cur != -1) {
  //   prev = cur;
  //   cur = order[cur].next;
  // }
  order[last].next = order_num;
  order[order_num].prev = last;
  last = order_num;
  order_num++;
  return;
}

void Delivery(int I) {
  material[I]++;

  if(root == -1) return;

  int cur = root;
  while(cur != -1) {
    int r = check(order[cur].need, order[cur].needCnt);
    if(r) {
      Bake(cur);      
      for(int i =0; i < order[cur].needCnt; i++) {
        material[order[cur].need[i]]--;
      }

      if(cur == root) {
        root = order[cur].next;
        if( root != -1) order[root].prev = -1;
        cur = root;
        continue;
      } 
      if ( cur == last) {
        last = order[cur].prev;
        if(last != -1) order[last].next = -1;        
        break;
      }

      order[order[cur].prev].next = order[cur].next;
      order[order[cur].next].prev = order[cur].prev;
    }
    cur = order[cur].next;
  }

}

Compilation message (stderr)

grader.c: In function 'main':
grader.c:65:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 20 / 20
• Subtask 4: 0 / 30