Submission #992628


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#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <cassert>
#include <iostream>
#include <sstream>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <utility>
#include <numeric>
#include <algorithm>
#include <bitset>
#include <complex>
#include <array>
#include <list>
#include <stack>
#include <valarray>

using namespace std;

typedef unsigned uint;
typedef long long Int;
typedef unsigned long long UInt;

const int INF = 1001001001;
const Int INFLL = 1001001001001001001LL;

template<typename T> void pv(T a, T b) { for (T i = a; i != b; ++i) cout << *i << " "; cout << endl; }
template<typename T> void chmin(T& a, T b) { if (a > b) a = b; }
template<typename T> void chmax(T& a, T b) { if (a < b) a = b; }
int in() { int x; scanf("%d", &x); return x; }
double fin() { double x; scanf("%lf", &x); return x; }
Int lin() { Int x; scanf("%lld", &x); return x; }

// Int dp[1<<20], dp2[1<<20];

int main() {
  Int N = lin();
  Int A = lin();
  const Int LIM = 1<<20;

  // dp[1] = 0;
  // for (int x = 1; x < LIM; ++x) {
  //   for (int xx = x + x, k = 2; xx < LIM; ++k, xx += x) {
  //     chmin(dp[xx], dp[x] + k + A);
  //   }
  // }

  // Int res = INFLL;
  // for (int x = 1; x < LIM; ++x) {
  //   chmin(res, dp[x] + (N + x - 1) / x);
  // }

  Int res = N;
  for (int x = 2; x < LIM; ++x) {
    chmin(res, x + A + (N + x - 1) / x);
  }
  for (int x = LIM; x >= 1; --x) {
    Int v = (N + x - 1) / x;
    chmin(res, v + A + (N + v - 1) / v);
  }

  for (int as = 2; as <= 40; ++as) {
    Int v = (1LL << as);
    Int ksum = 2 * as;
    vector<int> ks;
    for (int i = 0; i < as; ++i) {
      ks.push_back(2);
    }
    while (true) {
      chmin(res, (N + v - 1) / v + A * as + ksum);
      if (v >= N) {
        break;
      }
      sort(ks.begin(), ks.end());
      v = v / ks[0] * (ks[0] + 1);
      ++ks[0];
      ++ksum;
    }
  }

  printf("%lld\n", res);

  return 0;
}

Submission Info

Submission Time
Task E - Cookies
User japlj
Language C++14 (GCC 5.4.1)
Score 1000
Code Size 2029 Byte
Status
Exec Time 114 ms
Memory 384 KB

Compile Error

./Main.cpp: In function ‘int in()’:
./Main.cpp:34:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 int in() { int x; scanf("%d", &x); return x; }
                                  ^
./Main.cpp: In function ‘double fin()’:
./Main.cpp:35:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 double fin() { double x; scanf("%lf", &x); return x; }
                                          ^
./Main.cpp: In function ‘Int lin()’:
./Main.cpp:36:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
 Int lin() { Int x; scanf("%lld", &x); return x; }
                                     ^

Judge Result

Set Name Score / Max Score Test Cases
sample 0 / 0 sample-01.txt, sample-02.txt, sample-03.txt
dataset1 500 / 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 500 / 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
Case Name Status Exec Time Memory
01-01.txt 35 ms 256 KB
01-02.txt 35 ms 256 KB
01-03.txt 35 ms 256 KB
01-04.txt 35 ms 256 KB
01-05.txt 35 ms 256 KB
01-06.txt 35 ms 256 KB
01-07.txt 35 ms 256 KB
01-08.txt 35 ms 256 KB
01-09.txt 35 ms 256 KB
01-10.txt 35 ms 256 KB
01-11.txt 35 ms 256 KB
01-12.txt 35 ms 256 KB
01-13.txt 35 ms 256 KB
01-14.txt 36 ms 256 KB
01-15.txt 35 ms 256 KB
01-16.txt 35 ms 256 KB
01-17.txt 35 ms 256 KB
01-18.txt 36 ms 256 KB
01-19.txt 35 ms 256 KB
01-20.txt 35 ms 256 KB
01-21.txt 35 ms 256 KB
01-22.txt 36 ms 256 KB
01-23.txt 35 ms 256 KB
01-24.txt 36 ms 256 KB
01-25.txt 36 ms 256 KB
01-26.txt 36 ms 256 KB
02-01.txt 35 ms 256 KB
02-02.txt 104 ms 256 KB
02-03.txt 104 ms 256 KB
02-04.txt 104 ms 256 KB
02-05.txt 104 ms 256 KB
02-06.txt 104 ms 256 KB
02-07.txt 104 ms 256 KB
02-08.txt 104 ms 256 KB
02-09.txt 104 ms 256 KB
02-10.txt 104 ms 256 KB
02-11.txt 104 ms 256 KB
02-12.txt 104 ms 256 KB
02-13.txt 104 ms 256 KB
02-14.txt 104 ms 256 KB
02-15.txt 104 ms 256 KB
02-16.txt 104 ms 256 KB
02-17.txt 104 ms 256 KB
02-18.txt 104 ms 256 KB
02-19.txt 114 ms 256 KB
02-20.txt 104 ms 256 KB
02-21.txt 104 ms 256 KB
02-22.txt 104 ms 256 KB
02-23.txt 104 ms 256 KB
02-24.txt 110 ms 256 KB
02-25.txt 36 ms 256 KB
02-26.txt 53 ms 256 KB
02-27.txt 53 ms 256 KB
02-28.txt 54 ms 256 KB
02-29.txt 94 ms 256 KB
02-30.txt 78 ms 256 KB
02-31.txt 88 ms 256 KB
02-32.txt 57 ms 256 KB
02-33.txt 102 ms 256 KB
02-34.txt 83 ms 256 KB
02-35.txt 101 ms 256 KB
02-36.txt 98 ms 256 KB
02-37.txt 87 ms 384 KB
02-38.txt 104 ms 256 KB
02-39.txt 104 ms 256 KB
02-40.txt 103 ms 256 KB
sample-01.txt 35 ms 256 KB
sample-02.txt 104 ms 256 KB
sample-03.txt 36 ms 256 KB