oj.uz

Submission #286659

# Submission time Handle Problem Language Result Execution time Memory
286659 2020-08-30T16:42:25 Z ACmachine Strange Device (APIO19_strange_device) C++17
5 / 100
 599 ms 40688 KB 
//this is actually 1
#include <bits/stdc++.h>
using namespace std;

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

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

typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;
typedef vector<str> vstr;

#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back 
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define rsz resize 

const double EPS = 1e-9;
const int MOD = 1e9+7; // 998244353;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {1, 0, -1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};

#ifdef DEBUG
#define DBG if(1)
#else
#define DBG if(0)
#endif

#define dbg(x) cout << "(" << #x << " : " << x << ")" << endl;
// ostreams
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "[";  REP(i, v.size()) out << v[i] << ", ";  out << "]"; return out;}
// istreams
template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }
template<class T, class U>
istream& operator>>(istream& in, pair<T, U> &p){ in >> p.ff >> p.ss; return in; }
//searches
template<typename T, typename U>
T bsl(T lo, T hi, U f){ hi++; T mid; while(lo < hi){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid+1; } return lo; }
template<typename U>
double bsld(double lo, double hi, U f, double p = 1e-9){ int r = 3 + (int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid; } return (lo + hi)/2; }
template<typename T, typename U>
T bsh(T lo, T hi, U f){ lo--; T mid; while(lo < hi){ mid = (lo + hi + 1)/2; f(mid) ? lo = mid : hi = mid-1; } return lo; }
template<typename U>
double bshd(double lo, double hi, U f, double p = 1e-9){ int r = 3+(int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? lo = mid : hi = mid; } return (lo + hi)/2; }
// some more utility functions
template<typename T>
pair<T, int> get_min(vector<T> &v){ typename vector<T> :: iterator it = min_element(v.begin(), v.end()); return mp(*it, it - v.begin());}
template<typename T>
pair<T, int> get_max(vector<T> &v){ typename vector<T> :: iterator it = max_element(v.begin(), v.end()); return mp(*it, it - v.begin());}        
template<typename T> bool ckmin(T& a, const T& b){return b < a ? a = b , true : false;}
template<typename T> bool ckmax(T& a, const T& b){return b > a ? a = b, true : false;}

struct AcAutomaton{
    vector<pll> segs;
    int n; ll a, b;
	void read_in(){
		cin >> n >> a >> b;
        REP(i, n){
            pll s; cin >> s;
            segs.pb(s);
        }
	}
    vector<pll> normalize(pll segment, bool moduling, ll mod){
        if(!moduling) return {segment};
        vector<pll> ans;
        ll cnt = segment.ff / mod;
        if(segment.ff / mod == segment.ss / mod) {
            return {mp(segment.ff%mod, segment.ss%mod)};
        }
        else if(segment.ff / mod + 1 == segment.ss / mod){
            return {mp(segment.ff % mod, mod-1), mp(0, segment.ss % mod)};
        }
        else return {mp(0, mod-1)};
    }
	void solve(){
		vector<pll> n_segs;
        ll mod;
        bool moduling = false;
        if((ld)a < (ld)2*INFF / (ld)b){
            moduling = true;
            mod = a * b;
        }
        assert(moduling);
        REP(i, segs.size()){
            vector<pll> tmp = normalize(segs[i], moduling, mod);
            for(auto x : tmp) n_segs.pb(x); 
        }
        pll seg = mp(-1ll, -1ll);
        sort(all(n_segs));
        ll ans = 0;
        for(auto x : n_segs){
            if(seg == mp(-1ll, -1ll)) seg = x;
            else{
                if(x.ff > seg.ss){
                    ans += (seg.ss - seg.ff + 1);
                    seg = x; 
                }
                else{
                    ckmax(seg.ss, x.ss);
                }
            }
        } 
        if(seg != mp(-1ll, -1ll)) ans += (seg.ss - seg.ff + 1);
        cout << ans << endl;
	}
};
    
int main(){
 	ios_base::sync_with_stdio(false);
 	cin.tie(NULL); cout.tie(NULL);
	int tcase = 1;
	while(tcase--){
		AcAutomaton solver;
		solver.read_in();
		solver.solve();
	}
    return 0;
}

Compilation message

strange_device.cpp: In member function 'std::vector<std::pair<long long int, long long int> > AcAutomaton::normalize(pll, bool, ll)':
strange_device.cpp:96:12: warning: unused variable 'cnt' [-Wunused-variable]
   96 |         ll cnt = segment.ff / mod;
      |            ^~~
strange_device.cpp: In member function 'void AcAutomaton::solve()':
strange_device.cpp:26:40: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 | #define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
      |                                        ^
strange_device.cpp:28:18: note: in expansion of macro 'FOR'
   28 | #define REP(i,b) FOR(i,0,b,1)
      |                  ^~~
strange_device.cpp:114:9: note: in expansion of macro 'REP'
  114 |         REP(i, segs.size()){
      |         ^~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 5 ms 896 KB Output is correct
3 Correct 6 ms 896 KB Output is correct
4 Incorrect 0 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Runtime error 1 ms 512 KB Execution killed with signal 11

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 389 ms 40680 KB Output is correct

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 514 ms 40684 KB Output is correct
3 Incorrect 521 ms 40640 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 514 ms 40684 KB Output is correct
3 Incorrect 521 ms 40640 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 514 ms 40684 KB Output is correct
3 Incorrect 521 ms 40640 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 55 ms 4976 KB Output is correct
3 Correct 65 ms 4968 KB Output is correct
4 Correct 599 ms 40648 KB Output is correct
5 Correct 52 ms 4972 KB Output is correct
6 Correct 53 ms 4972 KB Output is correct
7 Correct 52 ms 4972 KB Output is correct
8 Correct 56 ms 5024 KB Output is correct
9 Correct 52 ms 4972 KB Output is correct
10 Correct 52 ms 5000 KB Output is correct
11 Correct 53 ms 4968 KB Output is correct
12 Correct 48 ms 4968 KB Output is correct
13 Correct 53 ms 5004 KB Output is correct
14 Correct 550 ms 40688 KB Output is correct
15 Incorrect 56 ms 5096 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 5 ms 896 KB Output is correct
3 Correct 6 ms 896 KB Output is correct
4 Incorrect 0 ms 384 KB Output isn't correct
5 Halted 0 ms 0 KB -