oj.uz

Submission #676852

# Submission time Handle Problem Language Result Execution time Memory
676852 2023-01-01T11:08:48 Z Ninja_Kunai Catfish Farm (IOI22_fish) C++17
18 / 100
 89 ms 14380 KB 
/**
*    Author :  Nguyen Tuan Vu
*    Created : 01.01.2023
**/

#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;
	}

	long long dp[N][2][2];
	int cost[N];
	long long solve(int n, int m, vector <array <int, 3>> fishes) {
		REP(i, m) cost[fishes[i][0]] = fishes[i][2];
		memset(dp, -1, sizeof dp);
		dp[0][0][0] = 0;
		dp[0][1][1] = 0;
		REP(i, n - 1) {
			REP(j, 2) REP(k, 2) if (dp[i][j][k] != -1) {
				if (j == 0) {
					if (k == 0) {
						maximize(dp[i + 1][0][0], dp[i][j][k]);
						maximize(dp[i + 1][1][1], dp[i][j][k] + cost[i]);
					}
					else {
						maximize(dp[i + 1][0][0], dp[i][j][k]);
						maximize(dp[i + 1][1][1], dp[i][j][k]);
					}
				}
				else {
					maximize(dp[i + 1][1][1], dp[i][j][k]);
					maximize(dp[i + 1][0][1], dp[i][j][k] + cost[i + 1]);
				}
			}
		}

		long long ans = 0;
		REP(j, 2) REP(k, 2) maximize(ans, dp[n - 1][j][k]);
		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);
	return 0;
}

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 4052 KB Output is correct
2 Correct 27 ms 4948 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 89 ms 14380 KB Output is correct
6 Correct 89 ms 14352 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 47 ms 9308 KB Output is correct
3 Correct 58 ms 11188 KB Output is correct
4 Correct 22 ms 4052 KB Output is correct
5 Correct 28 ms 5072 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 24 ms 5444 KB Output is correct
13 Correct 31 ms 6456 KB Output is correct
14 Correct 25 ms 5532 KB Output is correct
15 Correct 29 ms 6108 KB Output is correct
16 Correct 24 ms 5444 KB Output is correct
17 Correct 26 ms 6068 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 3 ms 3412 KB Output is correct
3 Correct 17 ms 6220 KB Output is correct
4 Correct 13 ms 5944 KB Output is correct
5 Correct 29 ms 10048 KB Output is correct
6 Correct 26 ms 9388 KB Output is correct
7 Correct 30 ms 10020 KB Output is correct
8 Correct 29 ms 10032 KB Output is correct

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 3 ms 3412 KB Output is correct
3 Correct 17 ms 6220 KB Output is correct
4 Correct 13 ms 5944 KB Output is correct
5 Correct 29 ms 10048 KB Output is correct
6 Correct 26 ms 9388 KB Output is correct
7 Correct 30 ms 10020 KB Output is correct
8 Correct 29 ms 10032 KB Output is correct
9 Incorrect 25 ms 6336 KB 1st lines differ - on the 1st token, expected: '99999', found: '0'
10 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 4052 KB Output is correct
2 Correct 27 ms 4948 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 89 ms 14380 KB Output is correct
6 Correct 89 ms 14352 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 47 ms 9308 KB Output is correct
9 Correct 58 ms 11188 KB Output is correct
10 Correct 22 ms 4052 KB Output is correct
11 Correct 28 ms 5072 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 24 ms 5444 KB Output is correct
19 Correct 31 ms 6456 KB Output is correct
20 Correct 25 ms 5532 KB Output is correct
21 Correct 29 ms 6108 KB Output is correct
22 Correct 24 ms 5444 KB Output is correct
23 Correct 26 ms 6068 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 3 ms 3412 KB Output is correct
26 Correct 17 ms 6220 KB Output is correct
27 Correct 13 ms 5944 KB Output is correct
28 Correct 29 ms 10048 KB Output is correct
29 Correct 26 ms 9388 KB Output is correct
30 Correct 30 ms 10020 KB Output is correct
31 Correct 29 ms 10032 KB Output is correct
32 Incorrect 0 ms 212 KB 1st lines differ - on the 1st token, expected: '3', found: '0'
33 Halted 0 ms 0 KB -