oj.uz

Submission #586311

# Submission time Handle Problem Language Result Execution time Memory
586311 2022-06-30T06:39:59 Z Mazaalai Knapsack (NOI18_knapsack) C++17
100 / 100
 51 ms 1204 KB 
#include <bits/stdc++.h>
// #define int long long
using namespace std;
 
#define _upgrade                  \
    ios_base::sync_with_stdio(0); \
    cin.tie(0);                   \
    cout.tie(0);
#define FOR(i, a, b) for (int i = a; i <= b; i++)
#define FORB(i, a, b) for (int i = a; i >= b; i--)
#define REP(i, a) for (int i = 0; i < a; i++)
#define REP1(i, a) for (int i = 1; i < a; i++)
#define REPB(i, a) for (int i = a - 1; i >= 0; i--)
#define TRAV(a,x) for (auto& a: x)
#define LINE "---------------------\n"
#define ALL(A) A.begin(), A.end()
#define LLA(A) A.rbegin(), A.rend()
#define Q queue
#define ff first
#define ss second
#define ts to_string
#define pb push_back
#define mp make_pair
#define lb lower_bound 
#define ub upper_bound 
#define sz(x) (int)x.size()
 
using ll = long long;
using db = double;
using ld = long double;
using uint = unsigned;
// PQ going up <int, VI, greater<int> >
using VI = vector<int>;
using VS = vector<string>;
using VB = vector<bool>;
using VVB = vector<VB>;
using VVVB = vector<VVB>;
using VLL = vector<ll>;
using VVLL = vector<VLL>;
using VD = vector<db>;
using PII = pair<int, int>;
using PLL = pair<ll, ll>;
using VPI = vector<PII>;
using VVPI = vector<VPI>;
using VVI = vector<VI>;
using VVVI = vector<VVI>;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
void eraseDups(VI& a) {
    a.erase(unique(a.begin(), a.end()), a.end());
}
int strToInt(string&a) {
    stringstream x(a);
    int b;
    x >> b;
    return b;
}
int bitCnt(int a) {
    bitset <64> b(a);
    return b.count();
}
int bitCnt(string a) {
    bitset <64> b(a);
    return b.count();
}
 
int gcd(int a, int b) {
   if (b == 0) return a;
   return gcd(b, a % b);
}
 
void print(VI& a) {
    for (auto el : a) {
        cout << el << ' ';
    }
    cout << '\n';
}
void print(VPI& a) {
    for (auto el : a) {
        cout << el.ff << ',' << el.ss << ' ';
    }
    cout << '\n';
}
 
void print(VI& a, int n) {
    int cnt = 0;
    for (auto el : a) {
        if (cnt++ == n) break;
        cout << el << ' ';
    }
    cout << '\n';
}
void print(VVI& a) {
    for (auto el : a) {
        print(el);
    }
}
 
/*
 
|                    _                                                     
|  __   _           | |                                                    
| |   \| | ___  ___ | |_                                                   
| | |\ | |/ _ \/ __/| __|                                                  
| | | \  |  __/\__ \| |_                                                   
| |_|  \_|\___ /___/ \__|                                                  
|                                                      _         _   _     
|                                                     (_)       | | | |    
|  _ __  _ __ ___   __ _ _ __ __ _ _ __ ___  _ __ ___  _ ___ ___| |_| |_   
| | '_ \| '__/ _ \ / _` | '__/ _` | '_ ` _ \| '_ ` _ \| / __/ __| __| __|  
| | |_) | | | (_) | (_| | | | (_| | | | | | | | | | | | \__ \__ \ |_| |_   
| | .__/|_|  \___/ \__, |_|  \__,_|_| |_| |_|_| |_| |_|_|___/___/\__|\__|  
| | |               __/ |                                                  
| |_|              |___/                   _                               
|                                  _      (_)                              
|  _ __ ___   __ _ ____ __ _  __ _| | __ _ _                               
| | '_ ` _ \ / _` |_   / _` |/ _` | |/ _` | |                              
| | | | | | | (_|  /  / (_| | (_| | | (_| | |                              
| |_| |_| |_|\__,_|____\__,_|\__,_|_|\__,_|_|                              
*/
 
const db PI = acos(-1.0); //M_PI;
const ll INFF = 4e18;
const int INF = 1.07e9;
const int MOD = 1e9 + 7;
const int MOD1 = 998244353; //7*19*2^23 +1;
const int dx[] = {-1, 0, 1, 0};
const int dy[] = {0, 1, 0, -1};
 
 
 
 
 
const int N = 2e3 + 5;
const int M = 2e3 + 5;
 
 
int n, m;
string s;
int dp[N];
multiset <int> val[N];
VI vals[N];
void go () {
    cin >> m >> n;
    for (int i = 1; i <= n; i++) {
        int v, w, q; cin >> v >> w >> q;
        for (int j = 0; j < q; j++) {
            if ((val[w].size()+1) * w <= m) {
                val[w].insert(-v);
            } else {
                auto it = --val[w].end();
                if (*it > -v) {
                    val[w].erase(it);
                    val[w].insert(-v);
                } else {
                    break;
                }
            }
        }
    }
    for (int w = 1; w <= m; w++) {
        vals[w].reserve(val[w].size()+1);
        vals[w].pb(0);
        for (auto& el : val[w]) 
            vals[w].pb(vals[w].back()-el);
        val[w].clear();
    }
    memset(dp, -1, sizeof(dp));
    dp[0] = 0;
    for (int w = m; w > 0; w--) // 2e3
    for (int j = m-w; j >= 0; j--)  // 2e3
    for (int k = 1; k < vals[w].size() && j + w*k <= m && dp[j] >= 0; k++) 
        dp[j + w*k] = max(dp[j + w*k], dp[j] + vals[w][k]);
    
    for (int i = 1; i <= m; i++) dp[i] = max(dp[i], dp[i-1]);
    cout << dp[m] << '\n';
    
}
 
 
 
signed main () {
 
#ifndef ONLINE_JUDGE
    // freopen("0.in", "r", stdin);
    // freopen("0.out", "w", stdout);
#endif
    _upgrade
    int T = 1;
    while(T--) go();
    return (0-0); //<3
}
 
/* stuff you should look for
    * int overflow, array bounds
    * special cases (n=1?)
    
*/

Compilation message

knapsack.cpp: In function 'void go()':
knapsack.cpp:147:39: warning: comparison of integer expressions of different signedness: 'std::multiset<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  147 |             if ((val[w].size()+1) * w <= m) {
      |                 ~~~~~~~~~~~~~~~~~~~~~~^~~~
knapsack.cpp:171:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  171 |     for (int k = 1; k < vals[w].size() && j + w*k <= m && dp[j] >= 0; k++)
      |                     ~~^~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 4 ms 468 KB Output is correct
3 Correct 3 ms 468 KB Output is correct
4 Correct 5 ms 468 KB Output is correct
5 Correct 3 ms 468 KB Output is correct
6 Correct 5 ms 540 KB Output is correct
7 Correct 3 ms 468 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 4 ms 468 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 4 ms 468 KB Output is correct
3 Correct 3 ms 468 KB Output is correct
4 Correct 5 ms 468 KB Output is correct
5 Correct 3 ms 468 KB Output is correct
6 Correct 5 ms 540 KB Output is correct
7 Correct 3 ms 468 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 4 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 5 ms 468 KB Output is correct
13 Correct 2 ms 468 KB Output is correct
14 Correct 3 ms 468 KB Output is correct
15 Correct 3 ms 468 KB Output is correct
16 Correct 3 ms 468 KB Output is correct
17 Correct 5 ms 468 KB Output is correct
18 Correct 4 ms 468 KB Output is correct
19 Correct 3 ms 468 KB Output is correct
20 Correct 3 ms 468 KB Output is correct

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 4 ms 468 KB Output is correct
7 Correct 3 ms 468 KB Output is correct
8 Correct 5 ms 468 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 5 ms 540 KB Output is correct
11 Correct 3 ms 468 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 3 ms 468 KB Output is correct
14 Correct 4 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 5 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 3 ms 468 KB Output is correct
19 Correct 3 ms 468 KB Output is correct
20 Correct 3 ms 468 KB Output is correct
21 Correct 5 ms 468 KB Output is correct
22 Correct 4 ms 468 KB Output is correct
23 Correct 3 ms 468 KB Output is correct
24 Correct 3 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 4 ms 640 KB Output is correct
27 Correct 4 ms 468 KB Output is correct
28 Correct 4 ms 468 KB Output is correct
29 Correct 3 ms 468 KB Output is correct
30 Correct 4 ms 468 KB Output is correct
31 Correct 3 ms 468 KB Output is correct
32 Correct 3 ms 468 KB Output is correct
33 Correct 3 ms 468 KB Output is correct
34 Correct 3 ms 528 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 4 ms 468 KB Output is correct
7 Correct 3 ms 468 KB Output is correct
8 Correct 5 ms 468 KB Output is correct
9 Correct 3 ms 468 KB Output is correct
10 Correct 5 ms 540 KB Output is correct
11 Correct 3 ms 468 KB Output is correct
12 Correct 3 ms 468 KB Output is correct
13 Correct 3 ms 468 KB Output is correct
14 Correct 4 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 5 ms 468 KB Output is correct
17 Correct 2 ms 468 KB Output is correct
18 Correct 3 ms 468 KB Output is correct
19 Correct 3 ms 468 KB Output is correct
20 Correct 3 ms 468 KB Output is correct
21 Correct 5 ms 468 KB Output is correct
22 Correct 4 ms 468 KB Output is correct
23 Correct 3 ms 468 KB Output is correct
24 Correct 3 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 4 ms 640 KB Output is correct
27 Correct 4 ms 468 KB Output is correct
28 Correct 4 ms 468 KB Output is correct
29 Correct 3 ms 468 KB Output is correct
30 Correct 4 ms 468 KB Output is correct
31 Correct 3 ms 468 KB Output is correct
32 Correct 3 ms 468 KB Output is correct
33 Correct 3 ms 468 KB Output is correct
34 Correct 3 ms 528 KB Output is correct
35 Correct 17 ms 476 KB Output is correct
36 Correct 24 ms 588 KB Output is correct
37 Correct 20 ms 596 KB Output is correct
38 Correct 25 ms 524 KB Output is correct
39 Correct 33 ms 536 KB Output is correct
40 Correct 51 ms 1132 KB Output is correct
41 Correct 34 ms 972 KB Output is correct
42 Correct 34 ms 852 KB Output is correct
43 Correct 45 ms 1196 KB Output is correct
44 Correct 42 ms 1204 KB Output is correct
45 Correct 28 ms 516 KB Output is correct
46 Correct 24 ms 468 KB Output is correct
47 Correct 29 ms 584 KB Output is correct
48 Correct 34 ms 724 KB Output is correct
49 Correct 24 ms 476 KB Output is correct
50 Correct 43 ms 984 KB Output is correct