oj.uz

Submission #269804

# Submission time Handle Problem Language Result Execution time Memory
269804 2020-08-17T10:31:10 Z MarcoMeijer Building Bridges (CEOI17_building) C++14
30 / 100
 370 ms 13816 KB 
#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 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 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 = 1e6+10;

int n;
int h[MX], w[MX];

ll dp[MX];
ll smw[MX];
ll dph[MX];
map<int, ll> mp;

void program() {
    IN(n);
    RE(i,n) IN(h[i]);
    RE(i,n) IN(w[i]);
    smw[0]=0;
    RE(i,n) smw[i+1] = smw[i]+w[i];
    RE(i,MX) dph[i] = INF;

    dp[n-1] = 0;
    dph[h[n-1]] = smw[n-1];
    REV(i,0,n-1) {
        dp[i] = INF;
        REI(dif,-1002,1002) {
            ll j = h[i]+dif;
            if(j < 0) continue;
            if(j >= MX) continue;
            dp[i] = min(dp[i], dph[j] - smw[i+1] + (ll)dif*(ll)dif);
        }

        auto it = mp.lower_bound(h[i]);
        if(it != mp.end()) {
            ll dif = h[i] - it->fi;
            dp[i] = min(dp[i], it->se - smw[i+1] + dif*dif);
        }

        it = mp.upper_bound(h[i]);
        if(it != mp.begin()) {
            it--;
            ll dif = h[i] - it->fi;
            dp[i] = min(dp[i], it->se - smw[i+1] + dif*dif);
        }

        dph[h[i]] = min(dph[h[i]], dp[i]+smw[i]);
        if(w[i] >= 0) {
            if(mp.count(h[i])) {
                mp[h[i]] = min(mp[h[i]], dp[i]+smw[i]);
            } else {
                mp[h[i]] = dp[i]+smw[i];
            }
        }
    }
    OUTL(dp[0]);
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 8192 KB Output is correct
2 Correct 6 ms 8192 KB Output is correct
3 Correct 5 ms 8192 KB Output is correct
4 Correct 8 ms 8192 KB Output is correct
5 Correct 8 ms 8192 KB Output is correct

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 337 ms 10744 KB Output is correct
2 Correct 347 ms 10868 KB Output is correct
3 Correct 338 ms 10744 KB Output is correct
4 Correct 370 ms 10616 KB Output is correct
5 Incorrect 361 ms 13816 KB Output isn't correct

Subtask #3
0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 8192 KB Output is correct
2 Correct 6 ms 8192 KB Output is correct
3 Correct 5 ms 8192 KB Output is correct
4 Correct 8 ms 8192 KB Output is correct
5 Correct 8 ms 8192 KB Output is correct
6 Correct 337 ms 10744 KB Output is correct
7 Correct 347 ms 10868 KB Output is correct
8 Correct 338 ms 10744 KB Output is correct
9 Correct 370 ms 10616 KB Output is correct
10 Incorrect 361 ms 13816 KB Output isn't correct