oj.uz

Submission #1063354

# Submission time Handle Problem Language Result Execution time Memory
1063354 2024-08-17T17:09:44 Z PotatoTheWarriorFRTT Bulldozer (JOI17_bulldozer) C++17
5 / 100
 41 ms 468 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;
    bool considered = false;
    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 || !considered) {
                if(dir.first == 0 && dir.second == 0) {
                    considered = true;
                    dir = {1, 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));
            }
        }
    }
    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 14 ms 348 KB Output is correct
2 Correct 15 ms 468 KB Output is correct
3 Correct 14 ms 464 KB Output is correct
4 Correct 14 ms 348 KB Output is correct
5 Correct 21 ms 348 KB Output is correct
6 Correct 16 ms 344 KB Output is correct
7 Correct 14 ms 348 KB Output is correct
8 Correct 14 ms 344 KB Output is correct
9 Correct 14 ms 468 KB Output is correct
10 Correct 14 ms 344 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 460 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 30 ms 348 KB Output is correct
2 Correct 30 ms 464 KB Output is correct
3 Correct 30 ms 348 KB Output is correct
4 Correct 30 ms 348 KB Output is correct
5 Correct 32 ms 348 KB Output is correct
6 Correct 30 ms 348 KB Output is correct
7 Correct 29 ms 348 KB Output is correct
8 Incorrect 41 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 30 ms 348 KB Output is correct
2 Correct 30 ms 464 KB Output is correct
3 Correct 30 ms 348 KB Output is correct
4 Correct 30 ms 348 KB Output is correct
5 Correct 32 ms 348 KB Output is correct
6 Correct 30 ms 348 KB Output is correct
7 Correct 29 ms 348 KB Output is correct
8 Incorrect 41 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 30 ms 348 KB Output is correct
2 Correct 30 ms 464 KB Output is correct
3 Correct 30 ms 348 KB Output is correct
4 Correct 30 ms 348 KB Output is correct
5 Correct 32 ms 348 KB Output is correct
6 Correct 30 ms 348 KB Output is correct
7 Correct 29 ms 348 KB Output is correct
8 Incorrect 41 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 14 ms 348 KB Output is correct
2 Correct 15 ms 468 KB Output is correct
3 Correct 14 ms 464 KB Output is correct
4 Correct 14 ms 348 KB Output is correct
5 Correct 21 ms 348 KB Output is correct
6 Correct 16 ms 344 KB Output is correct
7 Correct 14 ms 348 KB Output is correct
8 Correct 14 ms 344 KB Output is correct
9 Correct 14 ms 468 KB Output is correct
10 Correct 14 ms 344 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 460 KB Output is correct
16 Correct 30 ms 348 KB Output is correct
17 Correct 30 ms 464 KB Output is correct
18 Correct 30 ms 348 KB Output is correct
19 Correct 30 ms 348 KB Output is correct
20 Correct 32 ms 348 KB Output is correct
21 Correct 30 ms 348 KB Output is correct
22 Correct 29 ms 348 KB Output is correct
23 Incorrect 41 ms 348 KB Output isn't correct
24 Halted 0 ms 0 KB -