Submission #5421312

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Source Code Expand

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

typedef int32_t i32;
typedef int64_t i64;

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

i64 f (i64 r, i64 n) {
  i64 t = 1;
  while (n--) {
    t *= r;
  }
  return t;
}

void run (void) {
  i64 n, a;
  scanf ("%" SCNi64 "%" SCNi64, &n, &a);
  i64 ans = n;
  for (i64 i = 2; i * i <= n; ++i) {
    for (i64 j = 1; 2 * j <= i; ++j) {
      i64 m = f (i / j, j - i % j) * f (i / j + 1, i % j);
      if (m > n) break;
      ans = MIN(ans, i + j * a + (n + m - 1) / m);
    }
  }
  printf ("%" PRIi64 "\n", ans);
}

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

Submission Info

Compile Error

./Main.c: In function ‘run’:
./Main.c:20:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf ("%" SCNi64 "%" SCNi64, &n, &a);
   ^

Judge Result