oj.uz

Submission #853631

# Submission time Handle Problem Language Result Execution time Memory
853631 2023-09-24T18:29:48 Z errw Catfish Farm (IOI22_fish) C++17
67 / 100
 1000 ms 81216 KB 
#pragma GCC optimize("O2")
#pragma GCC target("avx,avx2,fma")
#include<bits/stdc++.h>
#define MASK(x) ((1ll)<<(x))
#define BIT(x, i) (((x)>>(i))&(1))
#define ALL(v)  (v).begin(), (v).end()
#define REP(i, n)  for (int i = 0, _n = (n); i < _n; ++i)
#define FOR(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i)
#define FORD(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i)
#define db(val) "["#val" = "<<(val)<<"] "

template <class X, class Y> bool minimize(X &a, Y b) {
    if (a > b) return a = b, true;
    return false;
}
template <class X, class Y> bool maximize(X &a, Y b) {
    if (a < b) return a = b, true;
    return false;
}

using namespace std;

mt19937 jdg(chrono::steady_clock::now().time_since_epoch().count());
int Rand(int l, int r) {return l + jdg() % (r - l + 1);}

const int N = 1e5 + 5;
namespace sub1 {
	bool check(int m, vector <array <int, 3>> fishes) {
		REP(i, m) {
			if (fishes[i][0] & 1) return false;
		}

		return true;
	}

	long long solve(int m, vector <array <int, 3>> fishes) {
		//assert(1 == 0);
		long long ans = 0;
		REP(i, m) ans += fishes[i][2];
		return ans;
	}
}

namespace sub2 {
	bool check(int m, vector <array <int, 3>> fishes) {
		REP(i, m) if (fishes[i][0] > 1) return false;
		return true;
	}

	long long solve(int n, int m, vector <array <int, 3>> fishes) {
		//assert(1 == 0);
		if (n == 2) {
			long long ans[2] = {0};
			REP(i, m) ans[fishes[i][0]] += fishes[i][2];
			return max(ans[0], ans[1]);
		}

		vector <long long> sum[2];
		REP(i, 2) sum[i].resize(n + 7, 0);
		REP(i, m) sum[fishes[i][0]][fishes[i][1]] += fishes[i][2];
		FOR(i, 1, n - 1) REP(j, 2) sum[j][i] = sum[j][i - 1] + sum[j][i];
		long long ans = sum[1][n - 1];
		REP(i, n) maximize(ans, sum[0][i] + sum[1][n - 1] - sum[1][i]);
		return ans;
	}
}

namespace sub3 {
    bool check(int m, vector <array <int, 3>> fishes) {
        REP(i, m) if (fishes[i][1] != 0) return false;
        return true;
    }

    int cost[N];
    long long dp[N];

    long long solve(int n, int m, vector <array <int, 3>> fishes) {
        REP(i, m) cost[fishes[i][0] + 1] = fishes[i][2];
        FOR(i, 1, n) {
            maximize(dp[i], dp[i - 1]);
            if (i >= 2) maximize(dp[i], dp[i - 2] + cost[i - 1]);
            if (i > 3) maximize(dp[i], dp[i - 3] + cost[i - 1] + cost[i - 2]);
        }

        long long ans = 0;
        FOR(i, 1, n) {
            dp[i] = dp[i] + cost[i + 1];
            maximize(ans, dp[i]);
        }

        return ans;
    }
}

const long long INF = 1e18 + 7;
namespace sub6 {
    vector <int> coor[N];
    vector <long long> f[N], g[N];
    vector <pair <int, long long>> sum[N];

    const int M = 3e3 + 5;
    long long sum2[M][M];

    long long get_sum(int n, int i, int x) {
    	if (n <= 3e3) return sum2[i][x];
    	if (sum[i].size() == 0 || x < sum[i][0].first) return 0;
    	if (sum[i].back().first <= x) return sum[i].back().second;

        int pos = upper_bound(ALL(sum[i]), make_pair(x, INF)) - sum[i].begin() - 1;
        if (pos == -1) return 0;
        return sum[i][pos].second;
    }

    long long solve(int n, int m, vector <array <int, 3>> fishes) {
        REP(i, m) {
            if (fishes[i][0] + 1 > 1) coor[fishes[i][0]].push_back(fishes[i][1] + 1);
            if (fishes[i][0] + 1 < n) coor[fishes[i][0] + 2].push_back(fishes[i][1] + 1);

            if (n <= 3e3) sum2[fishes[i][0] + 1][fishes[i][1] + 1] = fishes[i][2];
            sum[fishes[i][0] + 1].push_back({fishes[i][1] + 1, fishes[i][2]});
        }

        if (n <= 3e3) {
        	FOR(i, 1, n) FOR(j, 1, n) sum2[i][j] += sum2[i][j - 1];
        }

        FOR(i, 1, n) {
            coor[i].push_back(0);
            sort (ALL(coor[i]));
            coor[i].erase(unique(ALL(coor[i])), coor[i].end());
            f[i].resize(coor[i].size() + 5, -1);
            g[i].resize(coor[i].size() + 5, -1);

            sort (ALL(sum[i]));
            FOR(j, 1, (int) sum[i].size() - 1) sum[i][j].second += sum[i][j - 1].second;
        }

        // f : roi
        // g : chua
        REP(i, coor[1].size()) g[1][i] = 0;

        FOR(i, 2, n) {
            REP(k, coor[i - 1].size()) if (f[i - 1][k] != -1 || g[i - 1][k] != -1) {
                REP(j, coor[i].size()) if (coor[i - 1][k] <= coor[i][j]) {
                    // f
                    if (f[i - 1][k] != -1) maximize(g[i][j], f[i - 1][k]);

                    // g
                    if (g[i - 1][k] != -1) {
                        long long R = get_sum(n, i - 1, coor[i][j]);
                        long long L = get_sum(n, i - 1, coor[i - 1][k]);

                        maximize(g[i][j], g[i - 1][k] + R - L);
                    }
                }
                else {
                    // update f
                    maximize(f[i][j], max(f[i - 1][k], g[i - 1][k]) + get_sum(n, i, coor[i - 1][k]) - get_sum(n, i, coor[i][j]));

                    // update g
                    maximize(g[i][j], max(f[i - 1][k], g[i - 1][k]));
                }
            }

            if (i > 2) {
                REP(k, coor[i - 2].size()) if (f[i - 2][k] != -1 || g[i - 2][k] != -1) {
                    REP(j, coor[i].size()) {
                        maximize(g[i][j], max(f[i - 2][k], g[i - 2][k]) + get_sum(n, i - 1, max(coor[i - 2][k], coor[i][j])));
                    }
                }
            }

            if (i > 3) {
                REP(k, coor[i - 3].size()) if (f[i - 3][k] != -1 || g[i - 3][k] != -1) {
                    REP(j, coor[i].size()) {
                        maximize(g[i][j], max(f[i - 3][k], g[i - 3][k]) + get_sum(n, i - 1, coor[i][j]) + get_sum(n, i - 2, coor[i - 3][k]));
                    }
                }
            }
        }

        long long ans = 0;
        FOR(i, 1, n) REP(j, coor[i].size()) maximize(ans, max(f[i][j], g[i][j]) + get_sum(n, i + 1, coor[i][j]));

        return ans;
    }
};

long long max_weights(int n, int m, vector <int> X, vector <int> Y, vector <int> W) {
	vector <array <int, 3>> fishes;
	fishes.resize(m + 7);
	REP(i, m) fishes[i] = {X[i], Y[i], W[i]};

	if (sub1::check(m, fishes)) return sub1::solve(m, fishes);
	else if (sub2::check(m, fishes)) return sub2::solve(n, m, fishes);
	else if (sub3::check(m, fishes)) return sub3::solve(n, m, fishes);
	else return sub6::solve(n, m, fishes);
	return 0;
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 15776 KB Output is correct
2 Correct 30 ms 17084 KB Output is correct
3 Correct 3 ms 10584 KB Output is correct
4 Correct 4 ms 10584 KB Output is correct
5 Correct 76 ms 31096 KB Output is correct
6 Correct 80 ms 31412 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10584 KB Output is correct
2 Correct 44 ms 22336 KB Output is correct
3 Correct 53 ms 25024 KB Output is correct
4 Correct 22 ms 15780 KB Output is correct
5 Correct 26 ms 17092 KB Output is correct
6 Correct 3 ms 10588 KB Output is correct
7 Correct 4 ms 10584 KB Output is correct
8 Correct 3 ms 10584 KB Output is correct
9 Correct 3 ms 10584 KB Output is correct
10 Correct 3 ms 10588 KB Output is correct
11 Correct 3 ms 10584 KB Output is correct
12 Correct 23 ms 17228 KB Output is correct
13 Correct 29 ms 18620 KB Output is correct
14 Correct 24 ms 17312 KB Output is correct
15 Correct 25 ms 17964 KB Output is correct
16 Correct 24 ms 17240 KB Output is correct
17 Correct 26 ms 17972 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10584 KB Output is correct
2 Correct 4 ms 11352 KB Output is correct
3 Correct 18 ms 15052 KB Output is correct
4 Correct 14 ms 13740 KB Output is correct
5 Correct 27 ms 17860 KB Output is correct
6 Correct 25 ms 17344 KB Output is correct
7 Correct 26 ms 17852 KB Output is correct
8 Correct 28 ms 17852 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10584 KB Output is correct
2 Correct 3 ms 10584 KB Output is correct
3 Correct 4 ms 10588 KB Output is correct
4 Correct 4 ms 10588 KB Output is correct
5 Correct 3 ms 10584 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 3 ms 14940 KB Output is correct
10 Correct 5 ms 19288 KB Output is correct
11 Correct 4 ms 14936 KB Output is correct
12 Correct 6 ms 19032 KB Output is correct
13 Correct 3 ms 12888 KB Output is correct
14 Correct 5 ms 19032 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10584 KB Output is correct
2 Correct 3 ms 10584 KB Output is correct
3 Correct 4 ms 10588 KB Output is correct
4 Correct 4 ms 10588 KB Output is correct
5 Correct 3 ms 10584 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 3 ms 14940 KB Output is correct
10 Correct 5 ms 19288 KB Output is correct
11 Correct 4 ms 14936 KB Output is correct
12 Correct 6 ms 19032 KB Output is correct
13 Correct 3 ms 12888 KB Output is correct
14 Correct 5 ms 19032 KB Output is correct
15 Correct 5 ms 19032 KB Output is correct
16 Correct 5 ms 12892 KB Output is correct
17 Correct 120 ms 24028 KB Output is correct
18 Correct 110 ms 24648 KB Output is correct
19 Correct 81 ms 24396 KB Output is correct
20 Correct 65 ms 24384 KB Output is correct
21 Correct 64 ms 24388 KB Output is correct
22 Correct 203 ms 30000 KB Output is correct
23 Correct 14 ms 20056 KB Output is correct
24 Correct 66 ms 22520 KB Output is correct
25 Correct 5 ms 19032 KB Output is correct
26 Correct 13 ms 20056 KB Output is correct

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10584 KB Output is correct
2 Correct 3 ms 10584 KB Output is correct
3 Correct 4 ms 10588 KB Output is correct
4 Correct 4 ms 10588 KB Output is correct
5 Correct 3 ms 10584 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 3 ms 14940 KB Output is correct
10 Correct 5 ms 19288 KB Output is correct
11 Correct 4 ms 14936 KB Output is correct
12 Correct 6 ms 19032 KB Output is correct
13 Correct 3 ms 12888 KB Output is correct
14 Correct 5 ms 19032 KB Output is correct
15 Correct 5 ms 19032 KB Output is correct
16 Correct 5 ms 12892 KB Output is correct
17 Correct 120 ms 24028 KB Output is correct
18 Correct 110 ms 24648 KB Output is correct
19 Correct 81 ms 24396 KB Output is correct
20 Correct 65 ms 24384 KB Output is correct
21 Correct 64 ms 24388 KB Output is correct
22 Correct 203 ms 30000 KB Output is correct
23 Correct 14 ms 20056 KB Output is correct
24 Correct 66 ms 22520 KB Output is correct
25 Correct 5 ms 19032 KB Output is correct
26 Correct 13 ms 20056 KB Output is correct
27 Correct 31 ms 81216 KB Output is correct
28 Execution timed out 1050 ms 55328 KB Time limit exceeded
29 Halted 0 ms 0 KB -

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 10584 KB Output is correct
2 Correct 4 ms 11352 KB Output is correct
3 Correct 18 ms 15052 KB Output is correct
4 Correct 14 ms 13740 KB Output is correct
5 Correct 27 ms 17860 KB Output is correct
6 Correct 25 ms 17344 KB Output is correct
7 Correct 26 ms 17852 KB Output is correct
8 Correct 28 ms 17852 KB Output is correct
9 Correct 91 ms 38660 KB Output is correct
10 Correct 69 ms 30392 KB Output is correct
11 Correct 163 ms 50108 KB Output is correct
12 Correct 3 ms 10584 KB Output is correct
13 Correct 3 ms 10584 KB Output is correct
14 Correct 4 ms 10584 KB Output is correct
15 Correct 3 ms 10588 KB Output is correct
16 Correct 3 ms 10588 KB Output is correct
17 Correct 3 ms 10584 KB Output is correct
18 Correct 3 ms 10584 KB Output is correct
19 Correct 3 ms 10588 KB Output is correct
20 Correct 3 ms 11352 KB Output is correct
21 Correct 25 ms 26200 KB Output is correct
22 Correct 113 ms 38336 KB Output is correct
23 Correct 205 ms 51852 KB Output is correct
24 Correct 215 ms 52776 KB Output is correct

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 15776 KB Output is correct
2 Correct 30 ms 17084 KB Output is correct
3 Correct 3 ms 10584 KB Output is correct
4 Correct 4 ms 10584 KB Output is correct
5 Correct 76 ms 31096 KB Output is correct
6 Correct 80 ms 31412 KB Output is correct
7 Correct 3 ms 10584 KB Output is correct
8 Correct 44 ms 22336 KB Output is correct
9 Correct 53 ms 25024 KB Output is correct
10 Correct 22 ms 15780 KB Output is correct
11 Correct 26 ms 17092 KB Output is correct
12 Correct 3 ms 10588 KB Output is correct
13 Correct 4 ms 10584 KB Output is correct
14 Correct 3 ms 10584 KB Output is correct
15 Correct 3 ms 10584 KB Output is correct
16 Correct 3 ms 10588 KB Output is correct
17 Correct 3 ms 10584 KB Output is correct
18 Correct 23 ms 17228 KB Output is correct
19 Correct 29 ms 18620 KB Output is correct
20 Correct 24 ms 17312 KB Output is correct
21 Correct 25 ms 17964 KB Output is correct
22 Correct 24 ms 17240 KB Output is correct
23 Correct 26 ms 17972 KB Output is correct
24 Correct 3 ms 10584 KB Output is correct
25 Correct 4 ms 11352 KB Output is correct
26 Correct 18 ms 15052 KB Output is correct
27 Correct 14 ms 13740 KB Output is correct
28 Correct 27 ms 17860 KB Output is correct
29 Correct 25 ms 17344 KB Output is correct
30 Correct 26 ms 17852 KB Output is correct
31 Correct 28 ms 17852 KB Output is correct
32 Correct 3 ms 10584 KB Output is correct
33 Correct 3 ms 10584 KB Output is correct
34 Correct 4 ms 10588 KB Output is correct
35 Correct 4 ms 10588 KB Output is correct
36 Correct 3 ms 10584 KB Output is correct
37 Correct 3 ms 10584 KB Output is correct
38 Correct 3 ms 10588 KB Output is correct
39 Correct 3 ms 10588 KB Output is correct
40 Correct 3 ms 14940 KB Output is correct
41 Correct 5 ms 19288 KB Output is correct
42 Correct 4 ms 14936 KB Output is correct
43 Correct 6 ms 19032 KB Output is correct
44 Correct 3 ms 12888 KB Output is correct
45 Correct 5 ms 19032 KB Output is correct
46 Correct 5 ms 19032 KB Output is correct
47 Correct 5 ms 12892 KB Output is correct
48 Correct 120 ms 24028 KB Output is correct
49 Correct 110 ms 24648 KB Output is correct
50 Correct 81 ms 24396 KB Output is correct
51 Correct 65 ms 24384 KB Output is correct
52 Correct 64 ms 24388 KB Output is correct
53 Correct 203 ms 30000 KB Output is correct
54 Correct 14 ms 20056 KB Output is correct
55 Correct 66 ms 22520 KB Output is correct
56 Correct 5 ms 19032 KB Output is correct
57 Correct 13 ms 20056 KB Output is correct
58 Correct 31 ms 81216 KB Output is correct
59 Execution timed out 1050 ms 55328 KB Time limit exceeded
60 Halted 0 ms 0 KB -