QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#137735 | #6343. Bitaro's travel | WonderfulWhale# | 0 | 1ms | 3744kb | C++20 | 1.2kb | 2023-08-10 17:11:15 | 2024-07-04 01:30:24 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define int64_t int
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
vector<pii> G[200009];
int dis[200009];
int tab[200009];
void dfs(int x) {
for(pii y:G[x]) {
dis[y.st] = dis[x]+y.nd;
dfs(y.st);
}
}
int d(int x, int y) {
return abs(tab[x]-tab[y]);
}
int32_t main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n;
cin >> n;
for(int i=0;i<n;i++)
cin >> tab[i];
for(int i=1;i<n-1;i++) {
if(d(i-1, i)<=d(i, i+1)) {
int target = i-1;
while(target-1>=0&&d(target-1, i)<=d(i,i+1)) target--;
G[target].pb({i, d(target, i)});
//cout << "edge: " << i << " -> " << target << "\n";
} else {
int target = i+1;
while(target+1<n&&d(target+1, i)<=d(i,i-1)) target++;
G[target].pb({i, d(target, i)});
//cout << "edge: " << i << " -> " << target << "\n";
}
}
dfs(0);
dfs(n-1);
int q;
cin >> q;
while(q--) {
int x;
cin >> x;
pii start = {1e9, -1};
for(int i=0;i<n;i++) {
start = min(start, {abs(tab[i]-x), i});
}
//cout << start.st << " " << start.nd << "\n";
cout << d(0, n-1)+start.st+dis[start.nd] << "\n";
}
}
Details
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Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 3744kb
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:
809905983
result:
wrong answer 1st numbers differ - expected: '809906250', found: '809905983'
Subtask #2:
score: 0
Skipped
Dependency #1:
0%
Subtask #3:
score: 0
Time Limit Exceeded
Test #31:
score: 0
Time Limit Exceeded
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:
200107 999999991 202154 200098 379455 200098 200098 381369 200098 265794 363817 200098 342292 260613 302587 200098 200098 281789 345769 200098 218270 200098 200098 200098 200098 332977 200098 224651 200098 259560 206246 231269 200098 371811 200098 382486 202443 200098 359464 200098 354417 200098 200...
result:
Subtask #4:
score: 0
Skipped
Dependency #1:
0%