Submission #835961

#	Time	Username	Problem	Language	Result	Execution time	Memory
835961		maomao90	Carnival Tickets (IOI20_tickets)	C++17	16 / 100	403 ms	81916 KiB

tickets

// I can do all things through Christ who strengthens me
// Philippians 4:13

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

#define REP(i, j, k) for (int i = j; i < (k); i++)
#define RREP(i, j, k) for (int i = j; i >= (k); i--)

template <class T>
inline bool mnto(T &a, const T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T &a, const T b) {return a < b ? a = b, 1 : 0;}

typedef long long ll;
typedef long double ld;
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
#define ALL(x) x.begin(), x.end()
#define SZ(x) (int) x.size()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef tuple<int, int, int> iii;

#ifndef DEBUG
#define cerr if (0) cerr
#endif

const int INF = 1000000005;
const ll LINF = 1000000000000000005;
const int MAXN = 1505;

int n, m, k;
vector<vi> x, s;
ii diff[MAXN];
ll ans;

ll find_maximum(int _k, vector<vi> _x) {
    k = _k; x = _x;
    n = SZ(x); m = SZ(x[0]);
    s = vector<vi>(n, vi(m, -1));
    REP (i, 0, n) {
        ans += x[i][m - 1];
        diff[i] = {x[i][m - 1] + x[i][0], i};
        s[i][m - 1] = 0;
    }
    sort(diff, diff + n);
    REP (i, 0, n / 2) {
        ans -= diff[i].FI;
        s[diff[i].SE][0] = 0;
        s[diff[i].SE][m - 1] = -1;
    }
    allocate_tickets(s);
    return ans;
}

• Subtask 1: 0 / 11
• Subtask 2: 16 / 16
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10