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Submission #427421

# Submission time Handle Problem Language Result Execution time Memory
427421 2021-06-14T15:05:39 Z 2qbingxuan Aliens (IOI16_aliens) C++14
0 / 100
 2000 ms 498388 KB 
#include "aliens.h"
#include <bits/stdc++.h>
#ifdef local
#define debug(x...) qqbx(#x, x)
#define pary(x...) danb(#x, x)
#define safe std::cerr<<__PRETTY_FUNCTION__<<" line "<<__LINE__<<" safe\n"
template <typename ...T> void qqbx(const char *s, T ...a) {
    int cnt = sizeof...(T);
    ((std::cerr << "\e[1;32m(" << s << ") = ("), ..., (std::cerr << a << (--cnt ? ", " : ")\e[0m\n")));
}
template <typename T> void danb(const char *s, T L, T R) {
    std::cerr << "\e[1;32m[ " << s << " ] = [ ";
    for (int f = 0; L != R; ++L)
        std::cerr << (f++ ? ", " : "") << *L;
    std::cerr << " ]\e[0m\n";
}
#else
#define debug(...) ((void)0)
#define pary(...) ((void)0)
#define safe ((void)0)
#endif // local
#define all(v) begin(v),end(v)

using namespace std;
using ll = long long;
const ll INF = 1e18;
void chmin(ll &x, ll v) {
    if (x > v)
        x = v;
}
ll sq(ll x) {
    return x * x;
}
long long take_photos(int n, int m, int k, std::vector<int> row, std::vector<int> col) {
    vector<pair<int,int>> seg;
    for (int i = 0; i < n; i++) {
        int l = row[i], r = col[i];
        if (l > r) swap(l, r);
        seg.emplace_back(l, r);
    }
    sort(all(seg));
    vector<vector<vector<ll>>> dp(n+1, vector<vector<ll>>(k+1, vector<ll>(n+1, INF)));
    dp[0][0][0] = 0;
    for (int i = 0; i < n; i++) {
        int l = seg[i].first;
        int r = seg[i].second;
        int mxpos = i;
        for (int j = i+1; j <= n; j++) {
            for (int c = 0; c < k; c++) {
                for (int a = 0; a <= n; a++) {
                    int lastr = (a ? seg[a-1].second : -1);
                    if (dp[i][c][a] == INF) continue;
                    ll cost = (lastr < l ? sq(r - l + 1) : lastr >= r ? 0 : sq(r - l + 1) - sq(lastr - l + 1));
                    chmin(dp[j][c+1][mxpos+1], dp[i][c][a] + cost);
                }
            }
            if (j < n) {
                if (r < seg[j].second) {
                    r = seg[j].second;
                    mxpos = j;
                }
            }
        }
    }
    ll mn = INF;
    for (int a = 0; a <= n; a++)
        mn = min(mn, dp[n][k][a]);
    return mn;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Incorrect 1 ms 204 KB Wrong answer: output = 57, expected = 52
6 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 1
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 292 KB Correct answer: answer = 1
4 Correct 1 ms 204 KB Correct answer: answer = 5
5 Correct 1 ms 204 KB Correct answer: answer = 41
6 Correct 1 ms 296 KB Correct answer: answer = 71923
7 Correct 52 ms 3788 KB Correct answer: answer = 77137
8 Execution timed out 2112 ms 498388 KB Time limit exceeded
9 Halted 0 ms 0 KB -

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Incorrect 1 ms 204 KB Wrong answer: output = 57, expected = 52
6 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Incorrect 1 ms 204 KB Wrong answer: output = 57, expected = 52
6 Halted 0 ms 0 KB -

Subtask #5
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Incorrect 1 ms 204 KB Wrong answer: output = 57, expected = 52
6 Halted 0 ms 0 KB -

Subtask #6
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Correct answer: answer = 4
2 Correct 1 ms 204 KB Correct answer: answer = 4
3 Correct 1 ms 204 KB Correct answer: answer = 4
4 Correct 1 ms 204 KB Correct answer: answer = 12
5 Incorrect 1 ms 204 KB Wrong answer: output = 57, expected = 52
6 Halted 0 ms 0 KB -