CODE FESTIVAL 2016 Final

Submission #5420575

Source codeソースコード

#include<stdio.h>
#include<stdlib.h>
#include<stdint.h>
#include<inttypes.h>

typedef int32_t i32;
typedef int64_t i64;

#define MIN(a,b) ((a) < (b) ? (a) : (b))

typedef struct node {
  i64 n;
  i64 min;
} node;

i64 eval (i64 n, i64 a, i64 r) {
  if (n <= a || n <= r) return n;
  i64 x = n;
  i64 y = r + a + eval ((n + r - 1) / r, a, r);
  return MIN(x, y);
}

void run (void) {
  i64 n, a;
  scanf ("%" SCNi64 "%" SCNi64, &n, &a);
  node dp[64];
  i32 len = 0;
  dp[len++] = (node) {n, n};
  for (i64 i = 2; i * i <= n; ++i) {
    for (i32 j = 0; j < len; ++j) {
      i64 x = eval (dp[j].n, a, i);
      if (dp[j].min <= x) continue;
      i64 d = x - dp[j].min;
      for (i32 k = j - 1; k >= 0; --k) dp[k].min -= d;
      node q[64];
      i64 t = dp[j].n;
      i32 top = 0;
      while (!(t <= n && t <= a)) {
	q[top++].n = t;
	t = (t + i - 1) / i;
      }
      q[top++] = (node) {t, t};
      for (i32 k = top - 2; k >= 0; --k) {
	q[k].min = MIN(q[k].n, i + a + q[k + 1].min);
      }
      i32 len = j;
      for (i32 k = 0; k < top; ++k) {
	dp[len++] = q[k];
	if (q[k].n == q[k].min) break;
      }
      break;
    }
  }
  printf ("%" PRIi64 "\n", dp[0].min);
}

int main (void) {
  run();
  return 0;
}

Submission

Task問題 E - Cookies
User nameユーザ名 sansen
Created time投稿日時
Language言語 C (GCC 5.4.1)
Status状態 RE
Score得点 0
Source lengthソースコード長 1279 Byte
File nameファイル名
Exec time実行時間 ms
Memory usageメモリ使用量 -

Compiler messageコンパイルメッセージ

./Main.c: In function ‘run’:
./Main.c:25:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
scanf ("%" SCNi64 "%" SCNi64, &n, &a);
^

Test case

Set

Set name Score得点 / Max score Cases
sample - sample-01.txt,sample-02.txt,sample-03.txt
dataset1 0 / 500 sample-01.txt,01-01.txt,01-02.txt,01-03.txt,01-04.txt,01-05.txt,01-06.txt,01-07.txt,01-08.txt,01-09.txt,01-10.txt,01-11.txt,01-12.txt,01-13.txt,01-14.txt,01-15.txt,01-16.txt,01-17.txt,01-18.txt,01-19.txt,01-20.txt,01-21.txt,01-22.txt,01-23.txt,01-24.txt,01-25.txt,01-26.txt
dataset2 0 / 500 sample-01.txt,sample-02.txt,sample-03.txt,01-01.txt,01-02.txt,01-03.txt,01-04.txt,01-05.txt,01-06.txt,01-07.txt,01-08.txt,01-09.txt,01-10.txt,01-11.txt,01-12.txt,01-13.txt,01-14.txt,01-15.txt,01-16.txt,01-17.txt,01-18.txt,01-19.txt,01-20.txt,01-21.txt,01-22.txt,01-23.txt,01-24.txt,01-25.txt,01-26.txt,02-01.txt,02-02.txt,02-03.txt,02-04.txt,02-05.txt,02-06.txt,02-07.txt,02-08.txt,02-09.txt,02-10.txt,02-11.txt,02-12.txt,02-13.txt,02-14.txt,02-15.txt,02-16.txt,02-17.txt,02-18.txt,02-19.txt,02-20.txt,02-21.txt,02-22.txt,02-23.txt,02-24.txt,02-25.txt,02-26.txt,02-27.txt,02-28.txt,02-29.txt,02-30.txt,02-31.txt,02-32.txt,02-33.txt,02-34.txt,02-35.txt,02-36.txt,02-37.txt,02-38.txt,02-39.txt,02-40.txt,sample-01.txt,sample-02.txt,sample-03.txt

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
01-01.txt RE
01-02.txt AC 1 ms 128 KB
01-03.txt AC 1 ms 128 KB
01-04.txt WA
01-05.txt AC 1 ms 128 KB
01-06.txt AC 1 ms 128 KB
01-07.txt AC 1 ms 128 KB
01-08.txt AC 1 ms 128 KB
01-09.txt AC 1 ms 128 KB
01-10.txt AC 1 ms 128 KB
01-11.txt AC 1 ms 128 KB
01-12.txt AC 1 ms 128 KB
01-13.txt AC 1 ms 128 KB
01-14.txt AC 1 ms 128 KB
01-15.txt RE
01-16.txt AC 1 ms 128 KB
01-17.txt AC 1 ms 128 KB
01-18.txt AC 1 ms 128 KB
01-19.txt AC 1 ms 128 KB
01-20.txt AC 1 ms 128 KB
01-21.txt AC
01-22.txt AC
01-23.txt AC 1 ms 128 KB
01-24.txt AC 1 ms 128 KB
01-25.txt AC 1 ms 128 KB
01-26.txt RE
02-01.txt AC 1 ms 128 KB
02-02.txt RE
02-03.txt AC 27 ms 128 KB
02-04.txt AC 27 ms 128 KB
02-05.txt AC 27 ms 128 KB
02-06.txt AC 27 ms 128 KB
02-07.txt WA
02-08.txt WA
02-09.txt WA
02-10.txt WA
02-11.txt WA
02-12.txt AC 27 ms 128 KB
02-13.txt AC 27 ms 128 KB
02-14.txt AC 26 ms 128 KB
02-15.txt WA
02-16.txt AC 26 ms 128 KB
02-17.txt AC 26 ms 128 KB
02-18.txt AC 26 ms 128 KB
02-19.txt AC 26 ms 128 KB
02-20.txt AC 26 ms 128 KB
02-21.txt AC 26 ms 128 KB
02-22.txt AC 20 ms 128 KB
02-23.txt AC 14 ms 128 KB
02-24.txt AC 14 ms 128 KB
02-25.txt AC 1 ms 128 KB
02-26.txt RE
02-27.txt AC 7 ms 128 KB
02-28.txt AC 7 ms 128 KB
02-29.txt RE
02-30.txt AC 17 ms 128 KB
02-31.txt AC 21 ms 128 KB
02-32.txt WA
02-33.txt AC 26 ms 128 KB
02-34.txt AC 18 ms 128 KB
02-35.txt AC 26 ms 128 KB
02-36.txt WA
02-37.txt AC 20 ms 128 KB
02-38.txt AC 26 ms 128 KB
02-39.txt AC 27 ms 128 KB
02-40.txt AC 28 ms 128 KB
sample-01.txt AC
sample-02.txt AC 2 ms 128 KB
sample-03.txt AC 1 ms 128 KB