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ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#296067 | #1418. Mountain Rescue Team | 17 | 0 | 1ms | 3632kb | C++20 | 3.6kb | 2024-01-02 06:59:21 | 2024-01-02 06:59:22 |
answer
#include <bits/stdc++.h>
using namespace std;
#include "grader.h"
bool g = false;
template<class F>
vector<int> smawk(int h, int w, F f){
auto dfs = [&](auto self, vector<int> &row, vector<int> &col) -> vector<int>{
int n = row.size();
if(n == 0) return {};
vector<int> ncol;
ncol.reserve(n);
for(int i:col){
while(!ncol.empty() && f(row[ncol.size()-1], ncol.back()) > f(row[ncol.size()-1], i)) ncol.pop_back();
if(ncol.size() < n) ncol.push_back(i);
}
vector<int> row_odd;
row_odd.reserve(n/2+1);
for(int i = 1; i < n; i+=2) row_odd.push_back(row[i]);
vector<int> ans = self(self, row_odd, ncol);
vector<int> res(n);
for(int i = 0; i < row_odd.size(); i++) res[i*2+1] = ans[i];
int j = 0;
for(int i = 0; i < n; i+=2){
int last = (i == n-1 ? ncol.back() : res[i+1]);
res[i] = ncol[j];
while(ncol[j] < last){
++j;
if(f(row[i], res[i]) > f(row[i], ncol[j])) res[i] = ncol[j];
}
}
return res;
};
vector<int> row(h), col(w);
iota(row.begin(), row.end(), 0);
iota(col.begin(), col.end(), 0);
return dfs(dfs, row, col);
}
void Rescue(int R, int C, int RS, int CS, int X){
map<pair<int, int>, int> m;
int l1 = 1, r1 = RS+1;
while(r1-l1 > 1){
int mid = (l1+r1)/2;
int x = mid, y = CS;
int h = m.count({x, y}) ? m[{x, y}] : Measure(x, y);
if(!m.count({x, y})){
if(h == X){
Pinpoint(x, y);
g = true;
}
m[{x, y}] = h;
}
if(h < X) l1 = mid;
else r1 = mid;
}
int l2 = RS, r2 = R+1;
while(r2-l2 > 1){
int mid = (l2+r2)/2;
int x = mid, y = CS;
int h = m.count({x, y}) ? m[{x, y}] : Measure(x, y);
if(!m.count({x, y})){
if(h == X){
Pinpoint(x, y);
g = true;
}
m[{x, y}] = h;
}
if(h < X) r2 = mid;
else l2 = mid;
}
auto f1 = [&](int x, int y){
if(g) return 0;
x = r1+x;
y = CS-y;
int h = m.count({x, y}) ? m[{x, y}] : Measure(x, y);
if(!m.count({x, y})){
if(h == X){
Pinpoint(x, y);
g = true;
}
m[{x, y}] = h;
}
return abs(h-X);
};
auto s1 = smawk(RS-r1+1, CS, f1);
for(int i = 0; i < s1.size(); i++){
cerr << s1[i] << " ";
f1(i, s1[i]);
}
cerr << endl;
auto f2 = [&](int x, int y){
if(g) return 0;
x = r1+x;
y = CS+y;
int h = m.count({x, y}) ? m[{x, y}] : Measure(x, y);
if(!m.count({x, y})){
if(h == X){
Pinpoint(x, y);
g = true;
}
m[{x, y}] = h;
}
return abs(h-X);
};
auto s2 = smawk(RS-r1+1, C-CS+1, f2);
for(int i = 0; i < s2.size(); i++){
cerr << s2[i] << " ";
f2(i, s2[i]);
}
cerr << endl;
auto f3 = [&](int x, int y){
if(g) return 0;
x = l2-x;
y = CS-y;
int h = m.count({x, y}) ? m[{x, y}] : Measure(x, y);
if(!m.count({x, y})){
if(h == X){
Pinpoint(x, y);
g = true;
}
m[{x, y}] = h;
}
return abs(h-X);
};
auto s3 = smawk(l2-RS+1, CS, f3);
for(int i = 0; i < s3.size(); i++){
cerr << s3[i] << " ";
f3(i, s3[i]);
}
cerr << endl;
auto f4 = [&](int x, int y){
if(g) return 0;
x = l2-x;
y = CS+y;
int h = m.count({x, y}) ? m[{x, y}] : Measure(x, y);
if(!m.count({x, y})){
if(h == X){
Pinpoint(x, y);
g = true;
}
m[{x, y}] = h;
}
return abs(h-X);
};
auto s4 = smawk(l2-RS+1, C-CS+1, f4);
for(int i = 0; i < s4.size(); i++){
cerr << s4[i] << " ";
f4(i, s4[i]);
}
cerr << endl;
}
Details
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Subtask #1:
score: 0
Runtime Error
Test #1:
score: 20
Accepted
time: 1ms
memory: 3632kb
input:
1 1 1 1 1 1
output:
Accepted
Test #2:
score: -20
Runtime Error
input:
2 2 2 2 1 1 2 3 4
output:
Unauthorized output
Subtask #2:
score: 0
Skipped
Dependency #1:
0%