oj.uz

Submission #1063394

# Submission time Handle Problem Language Result Execution time Memory
1063394 2024-08-17T17:49:16 Z medmdg Bulldozer (JOI17_bulldozer) C++14
5 / 100
 29 ms 472 KB 
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef pair<pair<ll, ll>, pair<ll, ll>> Point;
 
bool comp(Point p1, Point p2) {
    return p1.second.second < p2.second.second;
}
 
ll max_sub_sum(vector<ll> &vals) {
    ll S[vals.size()+1];
    ll M[vals.size()+1];
    S[0] = 0;
    M[0] = 0;
    for(int i=1;i<=vals.size();i++) {
        S[i] = S[i-1]+vals[i-1];
        M[i] = min(M[i-1], S[i]);
    }
    ll ans = 0;
    for(int i=0;i<vals.size();i++) {
        ans = max(ans, S[i+1] - M[i+1]);
    }
    return ans;
}
 
void solve() {
    int n; cin >> n;
    vector<Point> points;
    for(int i=0;i<n;i++) {
        Point p;
        long long x, y, w;
        cin >> p.first.first >> p.first.second >> p.second.first;
        points.push_back(p);
    }
    if(n==1) {
        cout << max(0LL, points[0].second.first) << endl;
        return;
    }
    ll ans =0;
    for(int i=0;i<n;i++) {
        for(int j=i+1;j<n;j++) {
            pair<ll, ll> dir = {points[i].first.first - points[j].first.first, points[i].first.second - points[j].first.second};
            if(dir.first != 0 || dir.second != 0 ) {
                for(int k=0;k<n;k++) {
                    points[k].second.second = dir.first * points[k].first.first + dir.second * points[k].first.second;
                }
                sort(points.begin(), points.end(), comp);
                vector<ll> vals;
                for(int k=0;k<n;k++) {
                    vals.push_back(0);
                    ll X = points[k].second.second;
                    while(points[k].second.second == X) {
                        vals[vals.size()-1]+=points[k].second.first;
                        k++;
                    }
                    k--;
                }
 
                ans = max(ans, max_sub_sum(vals));
            }
        }
    }
  	if(ans==0){
      ll t=0;
      for(auto i:points)t+=i.second.first;
      ans=max(ans,t);
    }
    cout << ans << endl;
}
int main()   {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    solve();
}

Compilation message

bulldozer.cpp: In function 'll max_sub_sum(std::vector<long long int>&)':
bulldozer.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for(int i=1;i<=vals.size();i++) {
      |                 ~^~~~~~~~~~~~~
bulldozer.cpp:21:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int i=0;i<vals.size();i++) {
      |                 ~^~~~~~~~~~~~
bulldozer.cpp: In function 'void solve()':
bulldozer.cpp:32:19: warning: unused variable 'x' [-Wunused-variable]
   32 |         long long x, y, w;
      |                   ^
bulldozer.cpp:32:22: warning: unused variable 'y' [-Wunused-variable]
   32 |         long long x, y, w;
      |                      ^
bulldozer.cpp:32:25: warning: unused variable 'w' [-Wunused-variable]
   32 |         long long x, y, w;
      |                         ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 348 KB Output is correct
2 Correct 14 ms 348 KB Output is correct
3 Correct 14 ms 468 KB Output is correct
4 Correct 14 ms 460 KB Output is correct
5 Correct 14 ms 352 KB Output is correct
6 Correct 14 ms 352 KB Output is correct
7 Correct 14 ms 464 KB Output is correct
8 Correct 14 ms 348 KB Output is correct
9 Correct 14 ms 472 KB Output is correct
10 Correct 14 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 348 KB Output is correct
2 Correct 29 ms 348 KB Output is correct
3 Correct 29 ms 468 KB Output is correct
4 Correct 29 ms 348 KB Output is correct
5 Correct 29 ms 356 KB Output is correct
6 Correct 29 ms 348 KB Output is correct
7 Correct 29 ms 356 KB Output is correct
8 Incorrect 29 ms 348 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 348 KB Output is correct
2 Correct 29 ms 348 KB Output is correct
3 Correct 29 ms 468 KB Output is correct
4 Correct 29 ms 348 KB Output is correct
5 Correct 29 ms 356 KB Output is correct
6 Correct 29 ms 348 KB Output is correct
7 Correct 29 ms 356 KB Output is correct
8 Incorrect 29 ms 348 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 348 KB Output is correct
2 Correct 29 ms 348 KB Output is correct
3 Correct 29 ms 468 KB Output is correct
4 Correct 29 ms 348 KB Output is correct
5 Correct 29 ms 356 KB Output is correct
6 Correct 29 ms 348 KB Output is correct
7 Correct 29 ms 356 KB Output is correct
8 Incorrect 29 ms 348 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 348 KB Output is correct
2 Correct 14 ms 348 KB Output is correct
3 Correct 14 ms 468 KB Output is correct
4 Correct 14 ms 460 KB Output is correct
5 Correct 14 ms 352 KB Output is correct
6 Correct 14 ms 352 KB Output is correct
7 Correct 14 ms 464 KB Output is correct
8 Correct 14 ms 348 KB Output is correct
9 Correct 14 ms 472 KB Output is correct
10 Correct 14 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 29 ms 348 KB Output is correct
17 Correct 29 ms 348 KB Output is correct
18 Correct 29 ms 468 KB Output is correct
19 Correct 29 ms 348 KB Output is correct
20 Correct 29 ms 356 KB Output is correct
21 Correct 29 ms 348 KB Output is correct
22 Correct 29 ms 356 KB Output is correct
23 Incorrect 29 ms 348 KB Output isn't correct
24 Halted 0 ms 0 KB -