oj.uz

Submission #549908

# Submission time Handle Problem Language Result Execution time Memory
549908 2022-04-16T20:06:55 Z BalintR Team Contest (JOI22_team) C++17
0 / 100
 1 ms 340 KB 
#include <bits/stdc++.h>
using namespace std;

typedef unsigned uint;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii> vpii;
typedef complex<double> cmplx;
template <typename T> using minPq = priority_queue<T, vector<T>, greater<T>>;
#define boost() cin.sync_with_stdio(0); cin.tie(0)
#define ms(a, x) memset(a, x, sizeof(a))
#define pb push_back
#define fs first
#define sn second
#define ALL(v) (v).begin(), (v).end()
#define SZ(v) ((int) (v).size())
#define lbv(v, x) (lower_bound((v).begin(), (v).end(), x) - (v).begin())
#define ubv(v, x) (upper_bound((v).begin(), (v).end(), x) - (v).begin())
template <typename T> inline void UNIQUE(vector<T> &v){sort(ALL(v)); v.resize(unique(ALL(v)) - v.begin());}
const int INF = 0x3f3f3f3f;
const ll LLINF = 0x3f3f3f3f3f3f3f3f;
const double PI = acos(-1);
#define FR(i, n) for(int i = 0; i < (n); i++)
#define FOR(i, a, b) for(int i = (a); i < (b); i++)
#define FORR(i, a, b) for(int i = (a); i >= (b); i--)
#define dbg(x) {cout << #x << ' ' << x << endl;}
#define dbgArr(arr, n) {cout << #arr; FR(_i, n) cout << ' ' << arr[_i]; cout << endl;}

typedef array<int, 3> trip;

const int MN = 4005;
int n;
vector<trip> vec;
vi ys;
int mxZPref[MN], mnZ[MN];

int main(){
    boost();
    cin >> n;
    FR(i, n){
        int a, b, c;
        cin >> a >> b >> c;
        vec.pb({a, b, c});
        ys.pb(b);
    }

    UNIQUE(vec);
    UNIQUE(ys);

    ms(mnZ, INF);

    int ans = -1;
    n = SZ(ys);
    for(auto [x, y, z] : vec){
        int yPos = lbv(ys, y);
        int mxSum = -1;

        //dbgArr(mxZPref, n);
        //dbgArr(mnZ, n);

        FOR(i, yPos+1, n) mxSum = max(mxSum, (ys[i] + mxZPref[i-1]) * (mxZPref[i-1] > mnZ[i]) * (mxZPref[i-1] > z));
        //dbg(mxSum);
        ans = max(ans, mxSum + x);

        mnZ[yPos] = min(mnZ[yPos], z);
        FOR(i, yPos, n) mxZPref[i] = max(mxZPref[i], z);
    }

    cout << ans << '\n';
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Incorrect 1 ms 320 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Incorrect 1 ms 320 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Incorrect 1 ms 320 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 320 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Incorrect 1 ms 320 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -