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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#355294 | #6343. Bitaro's travel | zyz07 | 0 | 107ms | 57444kb | C++17 | 1.6kb | 2024-03-16 15:24:06 | 2024-03-16 15:24:07 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define For(Ti,Ta,Tb) for(auto Ti=(Ta);Ti<=(Tb);++Ti)
#define Dec(Ti,Ta,Tb) for(auto Ti=(Ta);Ti>=(Tb);--Ti)
#define debug(...) fprintf(stderr,__VA_ARGS__)
#define range(Tx) begin(Tx),end(Tx)
using ll=long long;
const int N=2e5+5;
int n,q;
ll x[N];
struct SparseTable{
ll val[20][N];
template<typename F>
void build(F f){
For(i,1,n){
val[0][i]=f(i);
}
For(j,0,18){
For(i,2<<j,n){
val[j+1][i]=max(val[j][i-(1<<j)],val[j][i]);
}
}
}
int next(int i,ll x){
if(val[0][i]>x) return i;
Dec(k,18,0){
int j=i+(1<<k);
if(j<=n&&val[k][j]<=x){
i=j;
}
}
return i+1;
}
int prev(int i,ll x){
if(val[0][i]>x) return i;
Dec(k,18,0){
int j=i-(1<<k);
if(j>=1&&val[k][i-1]<=x){
i=j;
}
}
return i-1;
}
}st1,st2;
int main(){
cin.tie(nullptr)->sync_with_stdio(false);
cin>>n;
For(i,1,n){
cin>>x[i];
}
x[0]=-1e18;
x[n+1]=1e18;
st1.build([](int i){return 2*x[i]-x[i-1];});
st2.build([](int i){return x[i+1]-2*x[i];});
cin>>q;
For($,1,q){
int s;
cin>>s;
int pos=lower_bound(x+1,x+n+1,s)-x;
if(x[pos]-s>=s-x[pos-1]){
--pos;
}
int l=pos,r=pos,dir=0;
ll ans=0;
while(1<l||r<n){
if(!dir){
int i=max(1,st1.prev(l,x[r+1]));
ans+=x[l]-x[i];
if(r<n){
ans+=x[r+1]-x[i];
++r;
}
l=i;
}else{
int i=min(n,st2.next(r,-x[l-1]-1));
ans+=x[i]-x[r];
if(l>1){
ans+=x[i]-x[l-1];
--l;
}
r=i;
}
dir^=1;
}
cout<<ans<<'\n';
}
return 0;
}
Details
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Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 6096kb
input:
2000 154914587 154914588 154914591 154914592 154914594 154914596 154914598 154914599 154914601 154914603 154914608 154914610 154914612 154914615 154914618 154914619 154914621 154914622 154914626 154914627 154914631 154914633 154914636 154914638 154914640 154914641 154914642 154914644 154914645 15491...
output:
809906248
result:
wrong answer 1st numbers differ - expected: '809906250', found: '809906248'
Subtask #2:
score: 0
Skipped
Dependency #1:
0%
Subtask #3:
score: 0
Wrong Answer
Test #31:
score: 0
Wrong Answer
time: 107ms
memory: 57444kb
input:
200000 9 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181...
output:
200098 200098 200098 346046 200098 269768 313076 200098 366120 200098 200098 348433 200098 200098 200098 332141 311760 200098 200098 366459 200098 221124 225466 313243 322095 200098 281351 200098 257342 200098 200098 200098 316285 200098 394056 200098 200098 357928 200098 357158 200098 368006 326207...
result:
wrong answer 1st numbers differ - expected: '200107', found: '200098'
Subtask #4:
score: 0
Skipped
Dependency #1:
0%