oj.uz

Submission #1063251

# Submission time Handle Problem Language Result Execution time Memory
1063251 2024-08-17T15:49:36 Z PotatoTheWarriorFRTT Bulldozer (JOI17_bulldozer) C++17
5 / 100
 37 ms 600 KB 
#include <bits/stdc++.h>
using namespace std;
 
long long MOD = 1000000000+7;
typedef long long ll;
typedef pair<pair<ll, ll>, pair<ll, ll>> Point;

int log2(int x) {
    int ln = -1;
    while(x > 0) {
        ln++;
        x/=2;
    }
    return ln;
}
 
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;
        cin >> p.first.first >> p.first.second >> p.second.first;
        points.push_back(p);
    }
    ll ans = max(0LL, points[0].second.first);
    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);
    // int t;
    // cin >> t;
    // while (t--)
        solve();
    char sdhfn;
}

Compilation message

bulldozer.cpp: In function 'll max_sub_sum(std::vector<long long int>&)':
bulldozer.cpp:26:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for(int i=1;i<=vals.size();i++) {
      |                 ~^~~~~~~~~~~~~
bulldozer.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int i=0;i<vals.size();i++) {
      |                 ~^~~~~~~~~~~~
bulldozer.cpp: In function 'int main()':
bulldozer.cpp:84:10: warning: unused variable 'sdhfn' [-Wunused-variable]
   84 |     char sdhfn;
      |          ^~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 344 KB Output is correct
2 Correct 18 ms 344 KB Output is correct
3 Correct 14 ms 348 KB Output is correct
4 Correct 14 ms 464 KB Output is correct
5 Correct 14 ms 600 KB Output is correct
6 Correct 14 ms 348 KB Output is correct
7 Correct 18 ms 348 KB Output is correct
8 Correct 14 ms 348 KB Output is correct
9 Correct 14 ms 344 KB Output is correct
10 Correct 14 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 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 30 ms 344 KB Output is correct
2 Correct 30 ms 464 KB Output is correct
3 Correct 29 ms 348 KB Output is correct
4 Correct 32 ms 348 KB Output is correct
5 Correct 29 ms 348 KB Output is correct
6 Correct 37 ms 344 KB Output is correct
7 Correct 29 ms 348 KB Output is correct
8 Incorrect 30 ms 344 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 344 KB Output is correct
2 Correct 30 ms 464 KB Output is correct
3 Correct 29 ms 348 KB Output is correct
4 Correct 32 ms 348 KB Output is correct
5 Correct 29 ms 348 KB Output is correct
6 Correct 37 ms 344 KB Output is correct
7 Correct 29 ms 348 KB Output is correct
8 Incorrect 30 ms 344 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 344 KB Output is correct
2 Correct 30 ms 464 KB Output is correct
3 Correct 29 ms 348 KB Output is correct
4 Correct 32 ms 348 KB Output is correct
5 Correct 29 ms 348 KB Output is correct
6 Correct 37 ms 344 KB Output is correct
7 Correct 29 ms 348 KB Output is correct
8 Incorrect 30 ms 344 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 344 KB Output is correct
2 Correct 18 ms 344 KB Output is correct
3 Correct 14 ms 348 KB Output is correct
4 Correct 14 ms 464 KB Output is correct
5 Correct 14 ms 600 KB Output is correct
6 Correct 14 ms 348 KB Output is correct
7 Correct 18 ms 348 KB Output is correct
8 Correct 14 ms 348 KB Output is correct
9 Correct 14 ms 344 KB Output is correct
10 Correct 14 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 344 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 30 ms 344 KB Output is correct
17 Correct 30 ms 464 KB Output is correct
18 Correct 29 ms 348 KB Output is correct
19 Correct 32 ms 348 KB Output is correct
20 Correct 29 ms 348 KB Output is correct
21 Correct 37 ms 344 KB Output is correct
22 Correct 29 ms 348 KB Output is correct
23 Incorrect 30 ms 344 KB Output isn't correct
24 Halted 0 ms 0 KB -