Submission #1017018

#TimeUsernameProblemLanguageResultExecution timeMemory
1017018dimashhhPacking Biscuits (IOI20_biscuits)C++17
Compilation error
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; const int N = 2e5 + 1; int ok[N]; int n,timer = 0; int hsb(ll x) { for(int i = b;i >= 0;i--){ if((x >> i) & 1){ return i; } } return -1; } ll s[N]; int b = 19; ll count_tastiness(ll x, vector<ll> a){ ++timer; n = (int)a.size(); for(int i = 0;i <= b;i++){ s[i] = 0; } for(int i = 0;i < n;i++){ s[i] = (1ll << i) * 1ll * a[i]; } for(int i =1;i <= b;i++){ s[i] += s[i - 1]; } ok[0] = timer; int ret = 0; // cout << x << ' ' << n << "f\n"; for(int i = 0;i < N;i++){ if(ok[i] == timer){ ret++; int t = hsb(i); for(int j = t + 1;j <= b;j++){ ll left = s[j] - i * 1ll * x; if(left / x >= (1ll << j) * 1ll){ if((i | (1ll << j)) > N) return -1; ok[(i | (1ll << j))] = timer; } } } } return ret; }

Compilation message (stderr)

biscuits.cpp: In function 'int hsb(ll)':
biscuits.cpp:9:17: error: 'b' was not declared in this scope
    9 |     for(int i = b;i >= 0;i--){
      |                 ^