Submission #546962

#	Time	Username	Problem	Language	Result	Execution time	Memory
546962		socpite	Fuel Station (NOI20_fuelstation)	C++14	24 / 100	3025 ms	7108 KiB

FuelStation

#include<bits/stdc++.h>
using namespace std;

#define f first
#define s second

typedef long long ll;
typedef pair<int, int> pii;

const int maxn = 3e5+5;

int n, D;
int ans, crr;
pair<int, pii> fuel[maxn];
int sB[maxn];

int main(){
    cin >> n >> D;
    fuel[0].f = 0;
    for(int i = 1; i <= n; i++){
        cin >> fuel[i].f >> fuel[i].s.f >> fuel[i].s.s;
        sB[i] = fuel[i].s.s;
    }
    sort(sB+1, sB+n+1);
    sort(fuel+1, fuel+n+1);
    for(int i = 1; i <= n; i++){
        int crr = 0, ff = 0, gg = 1;
        for(int j = 1; j <= n; j++){
            crr-=fuel[j].f-fuel[j-1].f;
            if(crr < 0){
                ff-=crr;
                crr = 0;
            }
            if(fuel[j].s.s >= sB[i])crr+=fuel[j].s.f;
            if(ff > sB[i]){
                gg = 0;
                break;
            }
        }
        crr -= D-fuel[n].f;
        if(crr < 0){
            ff-=crr;
            crr = 0;
        }
        if(ff > sB[i])gg=0;
        if(gg){
            cout << ff;
            return 0;
        }
    }
    cout << D;
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 13
• Subtask 3: 17 / 17
• Subtask 4: 0 / 12
• Subtask 5: 0 / 19
• Subtask 6: 0 / 11
• Subtask 7: 0 / 21