제출 #286655

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
286655		ACmachine	이상한 기계 (APIO19_strange_device)	C++17	10 / 100	574 ms	41060 KiB

strange_device

//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((double)a < (double)2*INFF / (double)b){
            moduling = true;
            mod = a * b;
        }
        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;
}

컴파일 시 표준 에러 (stderr) 메시지

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:113:9: note: in expansion of macro 'REP'
  113 |         REP(i, segs.size()){
      |         ^~~

• Subtask 1: 0 / 10
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30