Submission #242434

#	Time	Username	Problem	Language	Result	Execution time	Memory
242434		Benq	Game (IOI13_game)	C++14	100 / 100	3808 ms	63136 KiB

game

#include <bits/stdc++.h>
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<db,db> pd; 

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

#define mp make_pair
#define f first
#define s second
#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;
const int MX = 2e5+5; 
const ll INF = 1e18; 
const ld PI = acos((ld)-1);
const int xd[4] = {1,0,-1,0}, yd[4] = {0,1,0,-1}; 
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count()); 

template<class T> bool ckmin(T& a, const T& b) { 
    return b < a ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { 
    return a < b ? a = b, 1 : 0; } 
constexpr int pct(int x) { return __builtin_popcount(x); } 
constexpr int bits(int x) { return 31-__builtin_clz(x); } // floor(log2(x)) 
constexpr int cdiv(int a, int b) { return a/b+!(a<0||a%b == 0); } // division of a by b rounded up, assumes b > 0 
int fstTrue(function<bool(int)> f, int lo, int hi) {
    hi ++; assert(lo <= hi); // assuming f is increasing
    while (lo < hi) { // find first index such that f is true 
        int mid = (lo+hi)/2; 
        f(mid) ? hi = mid : lo = mid+1; 
    } 
    return lo;
}
template<class T> void remDup(vector<T>& v) { 
    sort(all(v)); v.erase(unique(all(v)),end(v)); }

// INPUT
template<class A> void re(complex<A>& c);
template<class A, class B> void re(pair<A,B>& p);
template<class A> void re(vector<A>& v);
template<class A, size_t SZ> void re(array<A,SZ>& a);

template<class T> void re(T& x) { cin >> x; }
void re(db& d) { str t; re(t); d = stod(t); }
void re(ld& d) { str t; re(t); d = stold(t); }
template<class H, class... T> void re(H& h, T&... t) { re(h); re(t...); }

template<class A> void re(complex<A>& c) { A a,b; re(a,b); c = {a,b}; }
template<class A, class B> void re(pair<A,B>& p) { re(p.f,p.s); }
template<class A> void re(vector<A>& x) { trav(a,x) re(a); }
template<class A, size_t SZ> void re(array<A,SZ>& x) { trav(a,x) re(a); }

// TO_STRING
#define ts to_string
str ts(char c) { return str(1,c); }
str ts(bool b) { return b ? "true" : "false"; }
str ts(const char* s) { return (str)s; }
str ts(str s) { return s; }
template<class A> str ts(complex<A> c) { 
    stringstream ss; ss << c; return ss.str(); }
str ts(vector<bool> v) { 
    str res = "{"; F0R(i,sz(v)) res += char('0'+v[i]);
    res += "}"; return res; }
template<size_t SZ> str ts(bitset<SZ> b) {
    str res = ""; F0R(i,SZ) res += char('0'+b[i]);
    return res; }
template<class A, class B> str ts(pair<A,B> p);
template<class T> str ts(T v) { // containers with begin(), end()
    bool fst = 1; str res = "{";
    for (const auto& x: v) {
        if (!fst) res += ", ";
        fst = 0; res += ts(x);
    }
    res += "}"; return res;
}
template<class A, class B> str ts(pair<A,B> p) {
    return "("+ts(p.f)+", "+ts(p.s)+")"; }

// OUTPUT
template<class A> void pr(A x) { cout << ts(x); }
template<class H, class... T> void pr(const H& h, const T&... t) { 
    pr(h); pr(t...); }
void ps() { pr("\n"); } // print w/ spaces
template<class H, class... T> void ps(const H& h, const T&... t) { 
    pr(h); if (sizeof...(t)) pr(" "); ps(t...); }

// DEBUG
void DBG() { cerr << "]" << endl; }
template<class H, class... T> void DBG(H h, T... t) {
    cerr << ts(h); if (sizeof...(t)) cerr << ", ";
    DBG(t...); }
#ifdef LOCAL // compile with -DLOCAL
#define dbg(...) cerr << "LINE(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define dbg(...) 0
#endif

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

#include "game.h"

typedef struct node* pn;
struct node {
    ll d; pn l,r; int L, R;
    node(ll _d, int _L, int _R) : d(_d), L(_L), R(_R) { l = r = NULL; }
};

typedef struct Node* pN;
struct Node {
    pn d; pN l,r;
    Node() { d = NULL; l = r = NULL; }
};

pN root = NULL;

void init(int R, int C) {
    /* ... */
}

void tri(ll& a, ll b) { a = __gcd(a,b); } // OK

void UPD(pi P, int Q, ll K, pn& cur, int L = 0, int R = 1e9) {
    if (!cur) { cur = new node(K,Q,Q); return; } // OK
    //dbg("UPDATE",P,mp(cur->L,cur->R),Q,K,L,R);
    if (cur->L <= Q && Q <= cur->R) {
        if (cur->L == cur->R) { cur->d = K; return; }
        int M = (cur->L+cur->R)/2;
        if (Q <= M) UPD(P,Q,K,cur->l,cur->L,M);
        else UPD(P,Q,K,cur->r,M+1,cur->R);
        cur->d = __gcd(cur->l?cur->l->d:0,cur->r?cur->r->d:0);
        return;
    }
    while (1) {
        int M = (L+R)/2; 
        if ((Q <= M) != (cur->L <= M)) break;
        if (Q <= M) R = M;
        else L = M+1;
    }
    pn x = cur, y = new node(K,Q,Q);
    if (cur->L > Q) swap(x,y);
    int M = (L+R)/2;
    assert(L <= x->L && x->R <= M && M < y->L && y->R <= R);
    cur = new node(__gcd(x->d,y->d),L,R);
    cur->l = x, cur->r = y;
}

ll QUERY(pi P, int Q, int V, pn cur) {
    if (!cur || cur->R < Q || V < cur->L) return 0;
    if (Q <= cur->L && cur->R <= V) {
        // dbg("QUERY",P,mp(cur->L,cur->R),Q,V,cur->d);
        // if (cur->l) dbg("LEF",cur->l->d);
        // if (cur->r) dbg("RIG",cur->r->d,cur->r->L,cur->r->R);
        return cur->d;
    }
    return __gcd(QUERY(P,Q,V,cur->l),QUERY(P,Q,V,cur->r));
}

void upd(int P, int Q, ll K, pN& cur, int L = 0, int R = 1e9) {
    if (!cur) cur = new Node();
    if (L == R) return UPD({L,R},Q,K,cur->d);
    int M = (L+R)/2;
    if (P <= M) upd(P,Q,K,cur->l,L,M);
    else upd(P,Q,K,cur->r,M+1,R);
    ll g = 0;
    if (cur->l) g = __gcd(g,QUERY({L,R},Q,Q,cur->l->d));
    if (cur->r) g = __gcd(g,QUERY({L,R},Q,Q,cur->r->d));
    //dbg("OKUPDATE",mp(L,R),Q,g);
    UPD({L,R},Q,g,cur->d);
}

void update(int P, int Q, long long K) { 
    //dbg("UPDATE",P,Q,K);
    upd(P,Q,K,root); }

int P,U,Q,V;

ll query(pN cur, int L = 0, int R = 1e9) {
    if (!cur || R < P || U < L) return 0; // OK
    if (P <= L && R <= U) return QUERY({L,R},Q,V,cur->d);
    int M = (L+R)/2;
    return __gcd(query(cur->l,L,M),query(cur->r,M+1,R));
}

long long calculate(int _P, int _Q, int _U, int _V) {
    P = _P, Q = _Q, U = _U, V = _V;
    //dbg("QUERY");
    return query(root);
}

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:18:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
  int res;
      ^~~
game.cpp: In function 'void setIn(std::__cxx11::string)':
game.cpp:130:31: 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); }
                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
game.cpp: In function 'void setOut(std::__cxx11::string)':
game.cpp:131:32: 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: 10 / 10
• Subtask 2: 27 / 27
• Subtask 3: 26 / 26
• Subtask 4: 17 / 17
• Subtask 5: 20 / 20