Submission #808497

#	Time	Username	Problem	Language	Result	Execution time	Memory
808497		drdilyor	Carnival Tickets (IOI20_tickets)	C++17	39 / 100	594 ms	79976 KiB

tickets

#include<bits/stdc++.h>
#include "tickets.h"
using namespace std;
using ll = long long;
const int inf = 1e9;

#ifdef ONPC
#define debug(args...) {cout << "[" << #args << "]: "; debug_out(args);}
#else
#define debug(args...) {42;}
#endif

void debug_out() {
    cout << endl;
}
template<typename H, typename... T>
void debug_out(vector<H> h, T... t) {
    cout << "{";
    for (H i : h) cout << i << ", ";
    cout << "}, ";
    debug_out(t...);
}
template<typename H, typename... T>
void debug_out(H h, T... t) {
    cout << h << ", ";
    debug_out(t...);
}

long long find_maximum(int k, std::vector<std::vector<int>> x) {
	int n = x.size();
	int m = x[0].size();

    vector<int> use(n);
    int c1 = 0;
    for (int i = 0; i < n; i++) {
        use[i] = k;
        for (int j = 0; j < k; j++) {
            c1 += x[i][j];
        }
    }

    int good = n / 2 * k;
    debug(good, c1, use);
    for (int i = 0; i < n; i++) {
        while (c1 < good && use[i]) {
            c1 -= x[i][use[i] - 1];
            c1 += x[i][m - 1 - k + use[i]];
            debug(i, m-1 - k + use[i]);
            use[i]--;
        }
    }
    debug(good, c1, use);

    vector type(n, vector<int>(m, 0));
    vector<tuple<int,int,int>> big;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < use[i]; j++) {
            big.emplace_back(x[i][j], i, j);
        }
        for (int j = 0; j < k - use[i]; j++) {
            big.emplace_back(x[i][m - 1 - j], i, m-1-j);
        }
    }
    sort(big.begin(), big.end());
    assert((int)big.size() == n * k);
    for (int i = 0; i < n * k; i++) {
        int a = get<1>(big[i]);
        int b = get<2>(big[i]);
        type[a][b] = i < n / 2 * k ? -1 : 1;
    }

    ll sum = 0;
    vector ans(n, vector<int>(m, -1));
    int round_low = 0;
    for (int i = 0; i < n; i++) {
        debug(i, ans[i]);
        for (int j = 0; j < m; j++) {
            if (type[i][j] == -1) {
                sum -= x[i][j];
                ans[i][j] = round_low++;
                if (round_low >= k) round_low -= k;
            }
        }
        int round = round_low;
        for (int j = 0; j < m; j++) {
            if (type[i][j] == 1) {
                sum += x[i][j];
                ans[i][j] = round++;
                if (round >= k) round -= k;
            }
        }
        debug(i, ans[i]);
    }
    allocate_tickets(ans);
    return sum;
}

Compilation message (stderr)

tickets.cpp: In function 'long long int find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:10:25: warning: statement has no effect [-Wunused-value]
   10 | #define debug(args...) {42;}
      |                         ^~
tickets.cpp:43:5: note: in expansion of macro 'debug'
   43 |     debug(good, c1, use);
      |     ^~~~~
tickets.cpp:10:25: warning: statement has no effect [-Wunused-value]
   10 | #define debug(args...) {42;}
      |                         ^~
tickets.cpp:48:13: note: in expansion of macro 'debug'
   48 |             debug(i, m-1 - k + use[i]);
      |             ^~~~~
tickets.cpp:10:25: warning: statement has no effect [-Wunused-value]
   10 | #define debug(args...) {42;}
      |                         ^~
tickets.cpp:52:5: note: in expansion of macro 'debug'
   52 |     debug(good, c1, use);
      |     ^~~~~
tickets.cpp:10:25: warning: statement has no effect [-Wunused-value]
   10 | #define debug(args...) {42;}
      |                         ^~
tickets.cpp:76:9: note: in expansion of macro 'debug'
   76 |         debug(i, ans[i]);
      |         ^~~~~
tickets.cpp:10:25: warning: statement has no effect [-Wunused-value]
   10 | #define debug(args...) {42;}
      |                         ^~
tickets.cpp:92:9: note: in expansion of macro 'debug'
   92 |         debug(i, ans[i]);
      |         ^~~~~

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