oj.uz

답안 #676068

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
676068 2022-12-29T09:42:22 Z madtuber Knapsack (NOI18_knapsack) C++14
29 / 100
 2 ms 1108 KB 
#include <bits/stdc++.h>
#define all(x) begin(x),end(x)
#define fir first
#define sec second
#define sz(x) x.size()
#define pb push_back
 
using namespace std;
using ll = long long;
using vi = vector<int>;
using pi = pair<int,int>;
using pdb = pair<double,double>;
using pll = pair<ll,ll>;
using vll = vector<ll>;
const double EPS = (1e-6);
 
void setio(string s){
    freopen((s + ".in").c_str(),"r",stdin);
    freopen((s + ".out").c_str(),"w",stdout);
}

struct Item{
    int v, w, k;
};

const int MXN = 1e5+1;
const int MXS = 2001;
int dp[MXN][MXS];

void solve(){
    int s, n;
    cin >> s >> n;

    vector<Item> a(n);
    for(auto& i :a){
        cin >> i.v >> i.w >> i.k;
    }
    
    for(int i{1}; i <= n; i++){
        for(int j{}; j <= s; j++){
            dp[i][j] = max(dp[i][j], dp[i-1][j]);
            int mx = min((s-j)/a[i-1].w, a[i-1].k);
            dp[i][j+mx*a[i-1].w] = max(dp[i][j+mx*a[i-1].w], dp[i-1][j] + mx*a[i-1].v);
        }
    }

    cout << dp[n][s];
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1;
    while(t--){
        solve();
    }
    return 0;
}

Compilation message

knapsack.cpp: In function 'void setio(std::string)':
knapsack.cpp:18:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     freopen((s + ".in").c_str(),"r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:19:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |     freopen((s + ".out").c_str(),"w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 340 KB Output is correct

Subtask #2
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 2 ms 1108 KB Output is correct
3 Correct 2 ms 980 KB Output is correct
4 Correct 2 ms 980 KB Output is correct
5 Correct 2 ms 980 KB Output is correct
6 Correct 2 ms 980 KB Output is correct
7 Correct 2 ms 1108 KB Output is correct
8 Correct 2 ms 980 KB Output is correct
9 Correct 2 ms 972 KB Output is correct
10 Correct 2 ms 1108 KB Output is correct

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 2 ms 1108 KB Output is correct
3 Correct 2 ms 980 KB Output is correct
4 Correct 2 ms 980 KB Output is correct
5 Correct 2 ms 980 KB Output is correct
6 Correct 2 ms 980 KB Output is correct
7 Correct 2 ms 1108 KB Output is correct
8 Correct 2 ms 980 KB Output is correct
9 Correct 2 ms 972 KB Output is correct
10 Correct 2 ms 1108 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 2 ms 1108 KB Output is correct
13 Correct 2 ms 980 KB Output is correct
14 Correct 2 ms 1108 KB Output is correct
15 Correct 2 ms 980 KB Output is correct
16 Incorrect 2 ms 1108 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 2 ms 1108 KB Output is correct
7 Correct 2 ms 980 KB Output is correct
8 Correct 2 ms 980 KB Output is correct
9 Correct 2 ms 980 KB Output is correct
10 Correct 2 ms 980 KB Output is correct
11 Correct 2 ms 1108 KB Output is correct
12 Correct 2 ms 980 KB Output is correct
13 Correct 2 ms 972 KB Output is correct
14 Correct 2 ms 1108 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 2 ms 1108 KB Output is correct
17 Correct 2 ms 980 KB Output is correct
18 Correct 2 ms 1108 KB Output is correct
19 Correct 2 ms 980 KB Output is correct
20 Incorrect 2 ms 1108 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 2 ms 1108 KB Output is correct
7 Correct 2 ms 980 KB Output is correct
8 Correct 2 ms 980 KB Output is correct
9 Correct 2 ms 980 KB Output is correct
10 Correct 2 ms 980 KB Output is correct
11 Correct 2 ms 1108 KB Output is correct
12 Correct 2 ms 980 KB Output is correct
13 Correct 2 ms 972 KB Output is correct
14 Correct 2 ms 1108 KB Output is correct
15 Correct 1 ms 596 KB Output is correct
16 Correct 2 ms 1108 KB Output is correct
17 Correct 2 ms 980 KB Output is correct
18 Correct 2 ms 1108 KB Output is correct
19 Correct 2 ms 980 KB Output is correct
20 Incorrect 2 ms 1108 KB Output isn't correct
21 Halted 0 ms 0 KB -