Submission #305807

#	Time	Username	Problem	Language	Result	Execution time	Memory
305807		4fecta	Carnival Tickets (IOI20_tickets)	C++14	Compilation error	0 ms	0 KiB

tickets

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

#define ll long long
#define int ll
#define ld long double
#define pii pair<int, int>
#define f first
#define s second
#define readl(_s) getline(cin, (_s));
#define boost() cin.tie(0); cin.sync_with_stdio(0)

const int MN = 1505;

int n, m, k, a[MN][MN], ans[MN][MN], tot, rnd[MN];

int32_t main() {
    boost();

    cin >> n >> m >> k;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cin >> a[i][j];
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = m - k; j < m; j++) { //half max, half min, choose all max first then trade for loss.
            tot += a[i][j];
        }
    }
    memset(ans, -1, sizeof(ans));
    vector<pii> v;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < k; j++) {
            v.push_back({-a[i][j] - a[i][m - k + j], i}); //we will take the min from this row since it loses the least pts.
        }
    }
    sort(v.begin(), v.end(), greater<>());
    for (int i = 0; i < n * k / 2; i++) tot += v[i].f, rnd[v[i].s]++;
    for (int i = 0; i < n; i++) {
        int id = 0;
        for (int j = 0; j < rnd[i]; j++) {
            ans[i][j] = id % k;
            id %= k;
            id++;
        }
        for (int j = m - 1; j > m - 1 - (k - rnd[i]); j--) {
            ans[i][j] = id % k;
            id %= k;
            id++;
        }
    }
    printf("%lld\n", tot);
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) printf("%lld ", ans[i][j]);
        printf("\n");
    }

    return 0;
}

Compilation message (stderr)

/tmp/cckh9Q3V.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccuts7sM.o:tickets.cpp:(.text.startup+0x0): first defined here
/tmp/cckh9Q3V.o: In function `main':
grader.cpp:(.text.startup+0x3b2): undefined reference to `find_maximum(int, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >)'
collect2: error: ld returned 1 exit status