Submission #1119637

#	Time	Username	Problem	Language	Result	Execution time	Memory
1119637		luvna	K blocks (IZhO14_blocks)	C++14	0 / 100	76 ms	79444 KiB

blocks

#include<bits/stdc++.h>

#define MASK(i) (1 << (i))
#define pub push_back
#define all(v) v.begin(), v.end()
#define compact(v) v.erase(unique(all(v)), end(v))
#define pii pair<int,int>
#define fi first
#define se second
#define endl "\n"
#define sz(v) (int)(v).size()
#define dbg(x) "[" #x " = " << (x) << "]"
#define int long long

using namespace std;

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

typedef long long ll;
typedef long double ld;

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rand(ll l, ll r){return uniform_int_distribution<ll>(l, r)(rng);}

const int N = 1e5 + 15;
const int MOD = 1e9 + 7;

int n, k;
int dp[N][101];

void solve(){
    cin >> n >> k;

    vector<int> a(n + 15, 0);

    for(int i = 1; i <= n; i++) cin >> a[i];

//    for(int i = 0; i <= n; i++){
//        for(int j = 0; j <= k; j++) dp[i][j] = MOD;
//    }

    memset(dp, 0x3f, sizeof(dp));

    dp[0][0] = 0;

    for(int K = 1; K <= k; K++){
        int mx = 0;
        for(int i = 1; i <= n; i++){
            for(int j = i; j >= 1; j--){
                maximize(mx, a[i]);
                minimize(dp[i][K], dp[j-1][K-1] + mx);
            }
        }
    }

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

signed main(){
    ios_base::sync_with_stdio(NULL);
    cin.tie(0); cout.tie(0);

    #define task "task"

    if(fopen(task".INP", "r")){
        freopen(task".INP", "r", stdin);
        freopen(task".OUT", "w", stdout);
    }

    int t; t = 1; //cin >> t;
    while(t--) solve();
}

Compilation message (stderr)

blocks.cpp: In function 'int main()':
blocks.cpp:67:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   67 |         freopen(task".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
blocks.cpp:68:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |         freopen(task".OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 14
• Subtask 2: 0 / 18
• Subtask 3: 0 / 21
• Subtask 4: 0 / 47