oj.uz

Submission #625871

# Submission time Handle Problem Language Result Execution time Memory
625871 2022-08-10T23:56:41 Z xynex Catfish Farm (IOI22_fish) C++17
9 / 100
 133 ms 18140 KB 
/**
  * Author: Tenjin
  * Created: 11.08.2022 05:09
  * Why am I so stupid? :c
  * Slishkom slab
**/

#include <bits/stdc++.h>
#include "fish.h"
// #pragma GCC optimize("inline")
// #pragma GCC optimize("-fgcse,-fgcse-lm")
// #pragma GCC optimize("-ftree-pre,-ftree-vrp")
// #pragma GCC optimize("-ffast-math")
// #pragma GCC optimize("-fipa-sra")
// #pragma GCC optimize("-fpeephole2")
// #pragma GCC optimize("-fsched-spec")
// #pragma GCC optimize("Ofast,no-stack-protector")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
// #pragma GCC optimize("unroll-loops")

using namespace std;

#define ll long long
#define dl double long
#define ull unsigned long long
#define pr pair
#define vt vector
#define ff first
#define ss second
#define mp make_pair
#define sz(a) (int)a.size()
#define pb push_back
#define pf push_front
#define popB pop_back
#define popF pop_front
#define bit_count __builtin_popcount
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sp(x) fixed << setprecision(x)

template<typename T> T get_rand(T l, T r) {
  random_device rd;
  mt19937 gen(rd());
  return uniform_int_distribution<T>(l, r)(gen);
}
template<typename T> T lcm(T a, T b) { return a * (b / __gcd(a, b)); }

template<class A> void read(vt<A>& v);
template<class A, size_t S> void read(array<A, S>& a);
template<class T> void read(T& x) { cin >> x; }
void read(double& d) { string t; read(t); d = stod(t); }
void read(long double& d) { string t; read(t); d = stold(t); }
template<class H, class... T> void read(H& h, T&... t) { read(h); read(t...); }
template<class A> void read(vt<A>& x) { for (auto& a : x) read(a); }
template<class A, size_t S> void read(array<A, S>& x) { for (auto& a : x) read(a); }

string to_string(char c) { return string(1, c); }
string to_string(bool b) { return b ? "true" : "false"; }
string to_string(const char* s) { return string(s); }
string to_string(string s) { return s; }
string to_string(vt<bool> v) { string res; for (int i = 0; i < sz(v); ++i) res += char('0' + v[i]); return res; }
template<size_t S> string to_string(bitset<S> b) { string res; for (int i = 0; i < S; ++i) res += char('0' + b[i]); return res; }
template<class T> string to_string(T v) { bool f = 1; string res; for (auto x : v) { if (!f) res += ' '; f = 0; res += to_string(x); } return res; }

template<class A> void write(A x) { cout << to_string(x); }
template<class H, class... T> void write(const H& h, const T&... t) { write(h); write(t...); }

void print() { write("\n"); }
template<class H, class... T> void print(const H& h, const T&... t) { write(h); if (sizeof...(t)) write(' '); print(t...); }

void freop(string s) {
  freopen((s + ".in").c_str(), "r", stdin);
  freopen((s + ".out").c_str(), "w", stdout);
}

const int MOD = 1e9 + 7;
const int N = 3e6 + 5;
const ll INF = 1e18;
const int M = 3e3 + 5;
const dl pi = acos(-1);
const dl eps = 1e-12;
const int sq = 700;

int dx[] = {-1, 0, 1, 0};
int dy[] = {0, -1, 0, 1};
/* ll vs int*/

ll max_weights(int n, int m, vector<int> x, vector<int> y, vector<int> w) {
  vt<vt<pr<int, ll> >> fishes(n);
  for(int i = 0; i < m; ++i) {
    fishes[x[i]].pb({y[i], w[i]});
  }
  vt<ll> pref(n, -INF);
  vt<ll> last1, last2;
  for(int x = 0; x < n; ++x) {
    sort(all(fishes[x]));
    vt<ll> cur1(sz(fishes[x]), -INF);
    ll mx1 = -INF, lastmx1 = -INF;
    if(x > 0) {
      int pos = sz(fishes[x - 1]) - 1;
      for(int i = sz(fishes[x]) - 1; i >= 0; --i) {
        int Y = fishes[x][i].ff;
        ll W = fishes[x][i].ss;
        cur1[i] = max(0ll, mx1) + W;
        if(x > 1) {
          cur1[i] = max(cur1[i], pref[x - 2] + W);
        }
        while(pos >= 0) {
          if(fishes[x - 1][pos].ff <= Y) break;
          lastmx1 = max(lastmx1, last1[pos]);
          pos--;
        }
        cur1[i] = max(cur1[i], lastmx1 + W);
        mx1 = max(mx1, cur1[i]);
      }
    }
    if(!last1.empty()) mx1 = max(mx1, *max_element(all(last1)));
    swap(last1, cur1);
    vt<ll> cur2(sz(fishes[x]), -INF);
    ll mx2 = -INF, lastmx2 = -INF;
    if(x < n - 1) {
      int pos = 0;
      for(int i = 0; i < sz(fishes[x]); ++i) {
        int Y = fishes[x][i].ff;
        ll W = fishes[x][i].ss;
        cur2[i] = max(0ll, mx2) + W;
        cur2[i] = max(cur2[i], lastmx1 + W);
        if(x > 1) {
          cur2[i] = max(cur2[i], pref[x - 2] + W);
        }
        if(x) {
          while(pos < sz(fishes[x - 1])) {
            if(fishes[x - 1][pos].ff >= Y) break;
            lastmx2 = max(lastmx2, last2[pos]);
            pos++;
          }
        }
        cur2[i] = max(cur2[i], lastmx2 + W);
        mx2 = max(mx2, cur2[i]);
      }
    }
    if(!last2.empty()) mx2 = max(mx2, *max_element(all(last2)));
    swap(last2, cur2);
    if(x)  pref[x] = max({pref[x - 1], mx1, mx2});
    else pref[x] = max({mx1, mx2});
  }
  return pref[n - 1];
}

Compilation message

fish.cpp: In function 'void freop(std::string)':
fish.cpp:72:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fish.cpp:73:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |   freopen((s + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 7620 KB Output is correct
2 Correct 40 ms 8884 KB Output is correct
3 Correct 3 ms 3412 KB Output is correct
4 Correct 4 ms 3412 KB Output is correct
5 Correct 120 ms 17112 KB Output is correct
6 Correct 133 ms 18140 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 63 ms 11888 KB Output is correct
3 Correct 75 ms 14400 KB Output is correct
4 Correct 35 ms 7492 KB Output is correct
5 Correct 39 ms 8844 KB Output is correct
6 Correct 0 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 3 ms 3412 KB Output is correct
11 Correct 3 ms 3412 KB Output is correct
12 Correct 32 ms 7460 KB Output is correct
13 Correct 39 ms 8900 KB Output is correct
14 Correct 31 ms 7552 KB Output is correct
15 Correct 40 ms 8376 KB Output is correct
16 Correct 31 ms 7516 KB Output is correct
17 Correct 36 ms 8312 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3412 KB Output is correct
2 Correct 4 ms 3412 KB Output is correct
3 Incorrect 24 ms 6064 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '16359027219341'
4 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 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 Incorrect 1 ms 212 KB 1st lines differ - on the 1st token, expected: '216624184325', found: '192851496371'
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 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 Incorrect 1 ms 212 KB 1st lines differ - on the 1st token, expected: '216624184325', found: '192851496371'
10 Halted 0 ms 0 KB -

Subtask #6
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 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 Incorrect 1 ms 212 KB 1st lines differ - on the 1st token, expected: '216624184325', found: '192851496371'
10 Halted 0 ms 0 KB -

Subtask #7
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3412 KB Output is correct
2 Correct 4 ms 3412 KB Output is correct
3 Incorrect 24 ms 6064 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '16359027219341'
4 Halted 0 ms 0 KB -

Subtask #8
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 7620 KB Output is correct
2 Correct 40 ms 8884 KB Output is correct
3 Correct 3 ms 3412 KB Output is correct
4 Correct 4 ms 3412 KB Output is correct
5 Correct 120 ms 17112 KB Output is correct
6 Correct 133 ms 18140 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 63 ms 11888 KB Output is correct
9 Correct 75 ms 14400 KB Output is correct
10 Correct 35 ms 7492 KB Output is correct
11 Correct 39 ms 8844 KB Output is correct
12 Correct 0 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 3 ms 3412 KB Output is correct
17 Correct 3 ms 3412 KB Output is correct
18 Correct 32 ms 7460 KB Output is correct
19 Correct 39 ms 8900 KB Output is correct
20 Correct 31 ms 7552 KB Output is correct
21 Correct 40 ms 8376 KB Output is correct
22 Correct 31 ms 7516 KB Output is correct
23 Correct 36 ms 8312 KB Output is correct
24 Correct 4 ms 3412 KB Output is correct
25 Correct 4 ms 3412 KB Output is correct
26 Incorrect 24 ms 6064 KB 1st lines differ - on the 1st token, expected: '21261825233649', found: '16359027219341'
27 Halted 0 ms 0 KB -