Submission #1199393

#	Time	Username	Problem	Language	Result	Execution time	Memory
1199393		simplemind_31	Bulldozer (JOI17_bulldozer)	C++20	0 / 100	18 ms	328 KiB

bulldozer

#include <bits/stdc++.h>
#define ALL(x) x.begin(),x.end()
using namespace std;
typedef long long ll;
typedef __int128_t lll;
lll maxi;
ll n,x;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin >> n;
    vector<vector<lll>> points(n,{0,0,0});
    for(lll i=0;i<n;i++){
        cin >> x;
        points[i][0]=x;
        cin >> x;
        points[i][1]=x;
        cin >> x;
        points[i][2]=x;
    }
    for(lll i=0;i<n;i++){
        for(lll j=i+1;j<n;j++){
            pair<lll,lll> pendiente={points[j][1]-points[i][1],points[j][0]-points[i][0]};
            vector<pair<lll,lll>> nums(n);
            if(pendiente.first==0){
                //vertical
                for(int k=0;k<n;k++){
                    nums[k]={points[k][1],points[k][2]};
                }
                sort(ALL(nums));
                lll sum=0;
                for(int k=0;k<n;k++){
                    maxi=max(maxi,sum=max(nums[k].second,sum+nums[k].second));
                }
                sum=0;
                for(int k=1;k<n;k++){
                    if(nums[k].first==nums[k-1].first){
                        swap(nums[k],nums[k-1]);
                    }
                }
                for(int k=0;k<n;k++){
                    maxi=max(maxi,sum=max(nums[k].second,sum+nums[k].second));
                }
            }else{
                lll dx = points[j][0] - points[i][0];
                lll dy = points[j][1] - points[i][1];

                lll ux = -dy, uy = dx; // perpendicular direction

                for (lll k = 0; k < n; k++) {
                    lll proj = ux * points[k][0] + uy * points[k][1];
                    nums[k] = {proj, points[k][2]};
                }
                sort(ALL(nums));
                lll sum=0;
                for(int k=0;k<n;k++){
                    maxi=max(maxi,sum=max(nums[k].second,sum+nums[k].second));
                }
                sum=0;
                for(int k=1;k<n;k++){
                    if(nums[k].first==nums[k-1].first){
                        swap(nums[k],nums[k-1]);
                    }
                }
                for(int k=0;k<n;k++){
                    maxi=max(maxi,sum=max(nums[k].second,sum+nums[k].second));
                }
            }
        }
    }
    cout << (ll)maxi;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 20
• Subtask 3: 0 / 35
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20