Submission #320765

#	Time	Username	Problem	Language	Result	Execution time	Memory
320765		MarcoMeijer	Safety (NOI18_safety)	C++14	33 / 100	2085 ms	3704 KiB

safety

#include <bits/stdc++.h>
using namespace std;
 
// macros
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef pair<ll, ll> lll;
typedef tuple<int, int, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<iii> viii;
typedef vector<ll> vll;
typedef vector<lll> vlll;
#define REP(a,b,c) for(int a=int(b); a<int(c); a++)
#define RE(a,c) REP(a,0,c)
#define RE1(a,c) REP(a,1,c+1)
#define REI(a,b,c) REP(a,b,c+1)
#define REV(a,b,c) for(int a=int(c-1); a>=int(b); a--)
#define FOR(a,b) for(auto& a : b)
#define all(a) a.begin(), a.end()
#define INF 1e18
#define EPS 1e-9
#define pb push_back
#define popb pop_back
#define fi first
#define se second
#define sz size()
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
 
// input
template<class T> void IN(T& x) {cin >> x;}
template<class H, class... T> void IN(H& h, T&... t) {IN(h); IN(t...); }
 
// output
template<class T1, class T2> void OUT(const pair<T1,T2>& x);
template<class T> void OUT(const vector<T>& x);
template<class T> void OUT(const T& x) {cout << x;}
template<class H, class... T> void OUT(const H& h, const T&... t) {OUT(h); OUT(t...); }
template<class T1, class T2> void OUT(const pair<T1,T2>& x) {OUT(x.fi,' ',x.se);}
template<class T> void OUT(const vector<T>& x) {RE(i,x.size()) OUT(i==0?"":" ",x[i]);}
template<class... T> void OUTL(const T&... t) {OUT(t..., "\n"); }
template<class H> void OUTLS(const H& h) {OUTL(h); }
template<class H, class... T> void OUTLS(const H& h, const T&... t) {OUT(h,' '); OUTLS(t...); }
 
//===================//
//  Added libraries  //
//===================//
 
//===================//
//end added libraries//
//===================//
 
void program();
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    program();
}
 
 
//===================//
//   begin program   //
//===================//
 
const int MX = 5e5;

ll n, h;
ll s[MX];
multiset<ll> st;

void program() {
    IN(n, h);
    RE(i,n) IN(s[i]);

    ll cur0 = 0;
    RE(i,n) {
        multiset<ll> nxtSt;
        int cnt = 0;
        FOR(j,st) {
            if(cnt >= st.size()/2) {
                nxtSt.insert(j+h);
            } else {
                cur0 -= j;
                nxtSt.insert(max(0ll,j-h));
                cur0 += max(0ll, j-h);
            }
            cnt++;
        }
        nxtSt.insert(s[i]); nxtSt.insert(s[i]);
        cur0 += s[i];
        st = nxtSt;
    }

    ll ans = cur0, lst = 0, axel = st.size()/2;
    FOR(i,st) {
        cur0 -= (i-lst)*axel;
        lst = i;
        ans = min(ans, cur0);
        axel--;
        if(axel == 0) break;
    }
    OUTL(ans);
}

Compilation message (stderr)

safety.cpp: In function 'void program()':
safety.cpp:82:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |             if(cnt >= st.size()/2) {
      |                ~~~~^~~~~~~~~~~~~~

• Subtask 1: 3 / 3
• Subtask 2: 4 / 4
• Subtask 3: 9 / 9
• Subtask 4: 0 / 5
• Subtask 5: 6 / 6
• Subtask 6: 11 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 22
• Subtask 9: 0 / 29