Submission #1521558
Source Code Expand
#pragma GCC optimize("O3") #include<bits/stdc++.h> #define rc(x) return cout<<x<<endl,0 #define pb push_back #define in insert #define er erase #define fr first #define sc second const int inf=INT_MAX; const int nmax=1e5+5; const int mod=1e9+7; typedef long long ll; using namespace std; int n,i; ll h[nmax],a,b,l,r,mid,mx; int check(ll nr) { int i; ll cnt=0; for(i=1;i<=n;i++)if(h[i]-nr*b>0)cnt+=(h[i]-nr*b)/(a-b)+((h[i]-nr*b)%(a-b)!=0); return cnt<=nr; } int main() { ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0); //freopen("sol.in","r",stdin); cin>>n>>a>>b; for(i=1;i<=n;i++)cin>>h[i],mx=max(mx,h[i]); r=mx/b+(mx%b!=0); while(l<=r) { mid=(l+r)/2; if(check(mid))r=mid-1; else l=mid+1; } cout<<r+1<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - Widespread |
User | abcde2002 |
Language | C++14 (GCC 5.4.1) |
Score | 400 |
Code Size | 797 Byte |
Status | AC |
Exec Time | 47 ms |
Memory | 1024 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 400 / 400 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | a01, a02, a03 |
All | a01, a02, a03, b04, b05, b06, b07, b08, b09, b10, b11, b12, b13 |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
a01 | AC | 1 ms | 256 KB |
a02 | AC | 1 ms | 256 KB |
a03 | AC | 1 ms | 256 KB |
b04 | AC | 1 ms | 256 KB |
b05 | AC | 13 ms | 1024 KB |
b06 | AC | 47 ms | 1024 KB |
b07 | AC | 32 ms | 1024 KB |
b08 | AC | 30 ms | 1024 KB |
b09 | AC | 15 ms | 1024 KB |
b10 | AC | 14 ms | 1024 KB |
b11 | AC | 16 ms | 1024 KB |
b12 | AC | 16 ms | 1024 KB |
b13 | AC | 36 ms | 1024 KB |