oj.uz

Submission #259980

# Submission time Handle Problem Language Result Execution time Memory
259980 2020-08-08T21:30:23 Z ant101 Shortcut (IOI16_shortcut) C++14
0 / 100
 1 ms 512 KB 
#include "shortcut.h"
#include <iostream>
#include <algorithm>
#include <cstring>
#include <iomanip>
#include <fstream>
#include <cmath>
#include <vector>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <map>
#include <stack>
#include <queue>
#include <assert.h>
#include <limits>
#include <cstdio>
#include <complex>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef double db;
typedef string str;

typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;
#define mp make_pair
#define f first
#define s second

typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<ld> vd;
typedef vector<str> vs;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<pd> vpd;

#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend()
#define rsz resize
#define ins insert
#define ft front()
#define bk back()
#define pf push_front
#define pb push_back
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

const int MOD = 1e9+7; // 998244353; // = (119<<23)+1
const int MX = 3e3+5;
const ll INF = 1e18;
const ld PI = 4*atan((ld)1);
const int dx[4] = {0,1,0,-1}, dy[4] = {1,0,-1,0};


namespace io {
    void setIn(string s) { freopen(s.c_str(),"r",stdin); }
    void setOut(string s) { freopen(s.c_str(),"w",stdout); }
    void setIO(string s = "") {
        ios_base::sync_with_stdio(0); cin.tie(0); // fast I/O
        // cin.exceptions(cin.failbit); // ex. throws exception when you try to read letter into int
        if (sz(s)) {
            setIn(s+".in");
            setOut(s+".out");
        } // for USACO
    }
}

using namespace io;

namespace input {
    template<class T> void re(complex<T>& x);
    template<class T1, class T2> void re(pair<T1,T2>& p);
    template<class T> void re(vector<T>& a);
    template<class T, size_t SZ> void re(array<T,SZ>& a);
    
    template<class T> void re(T& x) { cin >> x; }
    void re(double& x) { string t; re(t); x = stod(t); }
    void re(ld& x) { string t; re(t); x = stold(t); }
    template<class Arg, class... Args> void re(Arg& first, Args&... rest) {
        re(first); re(rest...);
    }
    
    template<class T> void re(complex<T>& x) { T a,b; re(a,b); x = cd(a,b); }
    template<class T1, class T2> void re(pair<T1,T2>& p) { re(p.f,p.s); }
    template<class T> void re(vector<T>& a) { F0R(i,sz(a)) re(a[i]); }
    template<class T, size_t SZ> void re(array<T,SZ>& a) { F0R(i,SZ) re(a[i]); }
}

namespace output {
    template<class T1, class T2> void pr(const pair<T1,T2>& x);
    template<class T, size_t SZ> void pr(const array<T,SZ>& x);
    template<class T> void pr(const vector<T>& x);
    template<class T> void pr(const set<T>& x);
    template<class T1, class T2> void pr(const map<T1,T2>& x);
    
    template<class T> void pr(const T& x) { cout << x; }
    template<class Arg, class... Args> void pr(const Arg& first, const Args&... rest) {
        pr(first); pr(rest...);
    }
    
    template<class T1, class T2> void pr(const pair<T1,T2>& x) {
        pr("{",x.f,", ",x.s,"}");
    }
    template<class T> void prContain(const T& x) {
        pr("{");
        bool fst = 1; for (const auto& a: x) pr(!fst?", ":"",a), fst = 0; // const needed for vector<bool>
        pr("}");
    }
    template<class T, size_t SZ> void pr(const array<T,SZ>& x) { prContain(x); }
    template<class T> void pr(const vector<T>& x) { prContain(x); }
    template<class T> void pr(const set<T>& x) { prContain(x); }
    template<class T1, class T2> void pr(const map<T1,T2>& x) { prContain(x); }
    
    void ps() { pr("\n"); }
    template<class Arg> void ps(const Arg& first) {
        pr(first); ps(); // no space at end of line
    }
    template<class Arg, class... Args> void ps(const Arg& first, const Args&... rest) {
        pr(first," "); ps(rest...); // print w/ spaces
    }
}

using namespace output;

using namespace input;

ll add(ll a, ll b) {
    a += b;
    if(a >= MOD) {
        a -= MOD;
    }
    return a;
}
ll sub(ll a, ll b) {
    a -= b;
    if(a < 0) {
        a += MOD;
    }
    return a;
}

ll mul(ll a, ll b) {
    return (a * b)%MOD;
}

void add_self(ll& a, ll b) {
    a = add(a, b);
}
void sub_self(ll& a, ll b) {
    a = sub(a, b);
}
void mul_self(ll& a, ll b) {
    a = mul(a, b);
}

ll N, M;
ll t[4*MX];
ll lazy[4*MX];

void push(ll v) {
    t[v*2] += lazy[v];
    lazy[v*2] += lazy[v];
    t[v*2+1] += lazy[v];
    lazy[v*2+1] += lazy[v];
    lazy[v] = 0;
}

void update(ll v, ll tl, ll tr, ll l, ll r, ll addend) {
    if (l > r)
        return;
    if (l == tl && tr == r) {
        t[v] += addend;
        lazy[v] += addend;
    } else {
        push(v);
        ll tm = (tl + tr) / 2;
        update(v*2, tl, tm, l, min(r, tm), addend);
        update(v*2+1, tm+1, tr, max(l, tm+1), r, addend);
        t[v] = max(t[v*2], t[v*2+1]);
    }
}

ll query(ll v, ll tl, ll tr, ll l, ll r) {
    if (l > r)
        return -1e13;
    if (l <= tl && tr <= r)
        return t[v];
    push(v);
    ll tm = (tl + tr) / 2;
    return max(query(v*2, tl, tm, l, min(r, tm)),
               query(v*2+1, tm+1, tr, max(l, tm+1), r));
}

ll prec[MX];
ll pref[MX];
ll prec2[MX];

long long find_shortcut(int n, std::vector<int> l, std::vector<int> d, int c) {
    l.insert(l.begin(), 0);
    l.insert(l.begin(), 0);
    d.insert(d.begin(), 0);
    N = n;
    FOR (i, 1, N+1) {
        pref[i] = pref[i-1]+l[i];
    }
    ll currbest = pref[N]+d[N];
    ROF (i, 1, N) {
        prec[i] = max(prec[i+1], currbest-pref[i]+d[i]);
        currbest = max(currbest, pref[i]+d[i]);
    }
    currbest = pref[1]-d[1];
    FOR (i, 2, N+1) {
        prec2[i] = max(prec2[i-1], pref[i]+d[i]-currbest);
        currbest = min(currbest, pref[i]-d[i]);
    }
    ll ans = prec[1];
    ll lbest = 1e13;
    FOR (i, 1, N) {
        memset(lazy, 0, sizeof(lazy));
        memset(t, 0, sizeof(t));
        FOR (j, i+1, N+1) {
            update(1, 1, N, j, j, pref[j]+d[j]);
        }
        lbest = min(lbest, pref[i]-d[i]);
        update(1, 1, N, i, N, c);
        FOR (j, i+1, N+1) {
            update(1, 1, N, j, N, -l[j]);
            update(1, 1, N, j-1, j-1, pref[j-1]+d[j-1]-query(1, 1, N, j-1, j-1));
            ans = min(ans, max({prec2[i], prec[i+1], query(1, 1, N, i+1, N)-lbest}));
        }
    }
    return ans;
}

Compilation message

shortcut.cpp: In function 'void io::setIn(std::__cxx11::string)':
shortcut.cpp:68:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     void setIn(string s) { freopen(s.c_str(),"r",stdin); }
                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
shortcut.cpp: In function 'void io::setOut(std::__cxx11::string)':
shortcut.cpp:69:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     void setOut(string s) { freopen(s.c_str(),"w",stdout); }
                             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB n = 4, 80 is a correct answer
2 Correct 1 ms 512 KB n = 9, 110 is a correct answer
3 Correct 1 ms 512 KB n = 4, 21 is a correct answer
4 Correct 1 ms 512 KB n = 3, 4 is a correct answer
5 Correct 1 ms 512 KB n = 2, 62 is a correct answer
6 Correct 1 ms 512 KB n = 2, 3 is a correct answer
7 Correct 1 ms 512 KB n = 3, 29 is a correct answer
8 Correct 1 ms 512 KB n = 2, 3 is a correct answer
9 Correct 1 ms 512 KB n = 2, 3 is a correct answer
10 Correct 1 ms 512 KB n = 2, 2000000001 is a correct answer
11 Correct 1 ms 512 KB n = 2, 3000000000 is a correct answer
12 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
13 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
14 Incorrect 1 ms 512 KB n = 4, incorrect answer: jury 3000000001 vs contestant 4000000000
15 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB n = 4, 80 is a correct answer
2 Correct 1 ms 512 KB n = 9, 110 is a correct answer
3 Correct 1 ms 512 KB n = 4, 21 is a correct answer
4 Correct 1 ms 512 KB n = 3, 4 is a correct answer
5 Correct 1 ms 512 KB n = 2, 62 is a correct answer
6 Correct 1 ms 512 KB n = 2, 3 is a correct answer
7 Correct 1 ms 512 KB n = 3, 29 is a correct answer
8 Correct 1 ms 512 KB n = 2, 3 is a correct answer
9 Correct 1 ms 512 KB n = 2, 3 is a correct answer
10 Correct 1 ms 512 KB n = 2, 2000000001 is a correct answer
11 Correct 1 ms 512 KB n = 2, 3000000000 is a correct answer
12 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
13 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
14 Incorrect 1 ms 512 KB n = 4, incorrect answer: jury 3000000001 vs contestant 4000000000
15 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB n = 4, 80 is a correct answer
2 Correct 1 ms 512 KB n = 9, 110 is a correct answer
3 Correct 1 ms 512 KB n = 4, 21 is a correct answer
4 Correct 1 ms 512 KB n = 3, 4 is a correct answer
5 Correct 1 ms 512 KB n = 2, 62 is a correct answer
6 Correct 1 ms 512 KB n = 2, 3 is a correct answer
7 Correct 1 ms 512 KB n = 3, 29 is a correct answer
8 Correct 1 ms 512 KB n = 2, 3 is a correct answer
9 Correct 1 ms 512 KB n = 2, 3 is a correct answer
10 Correct 1 ms 512 KB n = 2, 2000000001 is a correct answer
11 Correct 1 ms 512 KB n = 2, 3000000000 is a correct answer
12 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
13 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
14 Incorrect 1 ms 512 KB n = 4, incorrect answer: jury 3000000001 vs contestant 4000000000
15 Halted 0 ms 0 KB -

Subtask #4
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB n = 4, 80 is a correct answer
2 Correct 1 ms 512 KB n = 9, 110 is a correct answer
3 Correct 1 ms 512 KB n = 4, 21 is a correct answer
4 Correct 1 ms 512 KB n = 3, 4 is a correct answer
5 Correct 1 ms 512 KB n = 2, 62 is a correct answer
6 Correct 1 ms 512 KB n = 2, 3 is a correct answer
7 Correct 1 ms 512 KB n = 3, 29 is a correct answer
8 Correct 1 ms 512 KB n = 2, 3 is a correct answer
9 Correct 1 ms 512 KB n = 2, 3 is a correct answer
10 Correct 1 ms 512 KB n = 2, 2000000001 is a correct answer
11 Correct 1 ms 512 KB n = 2, 3000000000 is a correct answer
12 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
13 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
14 Incorrect 1 ms 512 KB n = 4, incorrect answer: jury 3000000001 vs contestant 4000000000
15 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB n = 4, 80 is a correct answer
2 Correct 1 ms 512 KB n = 9, 110 is a correct answer
3 Correct 1 ms 512 KB n = 4, 21 is a correct answer
4 Correct 1 ms 512 KB n = 3, 4 is a correct answer
5 Correct 1 ms 512 KB n = 2, 62 is a correct answer
6 Correct 1 ms 512 KB n = 2, 3 is a correct answer
7 Correct 1 ms 512 KB n = 3, 29 is a correct answer
8 Correct 1 ms 512 KB n = 2, 3 is a correct answer
9 Correct 1 ms 512 KB n = 2, 3 is a correct answer
10 Correct 1 ms 512 KB n = 2, 2000000001 is a correct answer
11 Correct 1 ms 512 KB n = 2, 3000000000 is a correct answer
12 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
13 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
14 Incorrect 1 ms 512 KB n = 4, incorrect answer: jury 3000000001 vs contestant 4000000000
15 Halted 0 ms 0 KB -

Subtask #6
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB n = 4, 80 is a correct answer
2 Correct 1 ms 512 KB n = 9, 110 is a correct answer
3 Correct 1 ms 512 KB n = 4, 21 is a correct answer
4 Correct 1 ms 512 KB n = 3, 4 is a correct answer
5 Correct 1 ms 512 KB n = 2, 62 is a correct answer
6 Correct 1 ms 512 KB n = 2, 3 is a correct answer
7 Correct 1 ms 512 KB n = 3, 29 is a correct answer
8 Correct 1 ms 512 KB n = 2, 3 is a correct answer
9 Correct 1 ms 512 KB n = 2, 3 is a correct answer
10 Correct 1 ms 512 KB n = 2, 2000000001 is a correct answer
11 Correct 1 ms 512 KB n = 2, 3000000000 is a correct answer
12 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
13 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
14 Incorrect 1 ms 512 KB n = 4, incorrect answer: jury 3000000001 vs contestant 4000000000
15 Halted 0 ms 0 KB -

Subtask #7
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB n = 4, 80 is a correct answer
2 Correct 1 ms 512 KB n = 9, 110 is a correct answer
3 Correct 1 ms 512 KB n = 4, 21 is a correct answer
4 Correct 1 ms 512 KB n = 3, 4 is a correct answer
5 Correct 1 ms 512 KB n = 2, 62 is a correct answer
6 Correct 1 ms 512 KB n = 2, 3 is a correct answer
7 Correct 1 ms 512 KB n = 3, 29 is a correct answer
8 Correct 1 ms 512 KB n = 2, 3 is a correct answer
9 Correct 1 ms 512 KB n = 2, 3 is a correct answer
10 Correct 1 ms 512 KB n = 2, 2000000001 is a correct answer
11 Correct 1 ms 512 KB n = 2, 3000000000 is a correct answer
12 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
13 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
14 Incorrect 1 ms 512 KB n = 4, incorrect answer: jury 3000000001 vs contestant 4000000000
15 Halted 0 ms 0 KB -

Subtask #8
0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB n = 4, 80 is a correct answer
2 Correct 1 ms 512 KB n = 9, 110 is a correct answer
3 Correct 1 ms 512 KB n = 4, 21 is a correct answer
4 Correct 1 ms 512 KB n = 3, 4 is a correct answer
5 Correct 1 ms 512 KB n = 2, 62 is a correct answer
6 Correct 1 ms 512 KB n = 2, 3 is a correct answer
7 Correct 1 ms 512 KB n = 3, 29 is a correct answer
8 Correct 1 ms 512 KB n = 2, 3 is a correct answer
9 Correct 1 ms 512 KB n = 2, 3 is a correct answer
10 Correct 1 ms 512 KB n = 2, 2000000001 is a correct answer
11 Correct 1 ms 512 KB n = 2, 3000000000 is a correct answer
12 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
13 Correct 1 ms 512 KB n = 3, 3000000000 is a correct answer
14 Incorrect 1 ms 512 KB n = 4, incorrect answer: jury 3000000001 vs contestant 4000000000
15 Halted 0 ms 0 KB -