Submission #1058690

#	Time	Username	Problem	Language	Result	Execution time	Memory
1058690		idas	Carnival Tickets (IOI20_tickets)	C++17	14 / 100	281 ms	57844 KiB

tickets

#include "tickets.h"
#include "bits/stdc++.h"
#define FOR(i, begin, end) for(int i=(begin); i<(end); i++)
#define le(x) ((x)[((int)(x).size())-1])
#define sz(x) ((int)((x).size()))
#define pb push_back
#define s second
#define f first

using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> pii;

const int MxN=1510, INF=1e9;
int n, m, cn[MxN], l[MxN], r[MxN];

long long find_maximum(int k, std::vector<std::vector<int>> x) {
    n=sz(x); m=sz(x[0]);
    FOR(i, 0, n) r[i]=m-1;
    FOR(i, 0, n) FOR(j, 0, m) cn[i]+=x[i][j];

    vector b(n, vector(m, -1));

    int ans=0;
    FOR(R, 0, k) {
        vector<pii> inf;
        FOR(i, 0, n) inf.pb({cn[i],i});
        sort(inf.begin(), inf.end());
        FOR(i, 0, n/2) {
            int in=inf[i].s;
            if(m-R-cn[in]>0) {
                b[in][l[in]++]=R;
            }
            else {
                ans--;
                cn[in]--;
                b[in][r[in]--]=R;
            }
        }
        FOR(i, n/2, n) {
            int in=inf[i].s;
            if(cn[in]>0) {
                ans++;
                cn[in]--;
                b[in][r[in]--]=R;
            }
            else {
                b[in][l[in]++]=R;
            }
        }
    }

    allocate_tickets(b);
    return ans;
}
/*
2 3 2
0 2 5
1 1 3

4 2 1
5 9
1 4
3 6
2 7

4 4 1
0 1 2 9
4 4 4 5
3 3 3 7
3 4 4 4

4 2 1
0 10
1 5
0 6
0 6

4 4 1
0 1 2 9
7 7 7 7
7 7 7 7
7 7 7 7

8 2 1
1 9
0 10
2 3
3 4
6 8
1 5
0 2
3 4

4 3 2
0 1 1
1 1 1
0 0 1
0 0 0

4 2 2
0 1
0 1
0 0
1 1

4 2 1
0 1
0 0
0 0
1 1

4 3 2
0 0 0
0 1 1
0 1 1
1 1 1
*/

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