Submission #239616

# Submission time Handle Problem Language Result Execution time Memory
239616 2020-06-16T21:04:03 Z rqi Sterilizing Spray (JOI15_sterilizing) C++14
80 / 100
5000 ms 10064 KB
#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; } 
int pct(int x) { return __builtin_popcount(x); } 
int bits(int x) { return 31-__builtin_clz(x); } // floor(log2(x)) 
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;
}

// 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
}

/**
 * Description: range sum queries and point updates for $D$ dimensions
 * Source: https://codeforces.com/blog/entry/64914
 * Verification: SPOJ matsum
 * Usage: \texttt{BIT<int,10,10>} gives 2D BIT
 * Time: O((\log N)^D)
 */

template <class T, int ...Ns> struct BIT {
    T val = 0; void upd(T v) { val += v; }
    T query() { return val; }
};
template <class T, int N, int... Ns> struct BIT<T, N, Ns...> {
    BIT<T,Ns...> bit[N+1];
    template<typename... Args> void upd(int pos, Args... args) {
        for (; pos<=N; pos+=pos&-pos) bit[pos].upd(args...); }
    template<typename... Args> T sum(int r, Args... args) {
        T res=0; for (;r;r-=r&-r) res += bit[r].query(args...); 
        return res; }
    template<typename... Args> T query(int l, int r, Args... 
        args) { return sum(r,args...)-sum(l-1,args...); }
}; 

set<int> nonz;
BIT<ll, 100005> bit;
int C[100005];

void UPD(int T, int U){
    if(nonz.count(T)) nonz.erase(T);
    bit.upd(T, -C[T]);
    C[T] = U;
    if(C[T] != 0) nonz.ins(T);
    bit.upd(T, C[T]);
}

int main() {
    setIO();
    int N, Q, K;
    cin >> N >> Q >> K;
    for(int i = 1; i <= N; i++){
        int C;
        cin >> C;
        UPD(i, C);
    }

    for(int i = 1; i <= Q; i++){
        int S, T, U;
        cin >> S >> T >> U;
        if(S == 1){
            UPD(T, U);
        }
        else if(S == 2){
            auto it = nonz.lb(T);
            vpi upds;
            while(it != nonz.end()){
                int pos = *it;
                if(pos > U) break;
                upds.pb(mp(pos, C[pos]/K));
                it = next(it);
            }
            for(auto u: upds){
                UPD(u.f, u.s);
            }
        }
        else if(S == 3){
            ps(bit.query(T, U));
        }

        // dbg(i);
        // for(int i = 1; i <= N; i++){
        //     dbg(bit.query(i, i));
        // }
    }
    // you should actually read the stuff at the bottom
}

/* stuff you should look for
    * int overflow, array bounds
    * special cases (n=1?)
    * do smth instead of nothing and stay organized
    * WRITE STUFF DOWN
*/

Compilation message

sterilizing.cpp: In function 'void setIn(std::__cxx11::string)':
sterilizing.cpp:128:31: 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); }
                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
sterilizing.cpp: In function 'void setOut(std::__cxx11::string)':
sterilizing.cpp:129:32: 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); }
                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 8 ms 384 KB Output is correct
2 Correct 24 ms 512 KB Output is correct
3 Correct 10 ms 512 KB Output is correct
4 Correct 24 ms 512 KB Output is correct
5 Correct 22 ms 736 KB Output is correct
6 Correct 16 ms 640 KB Output is correct
7 Correct 21 ms 760 KB Output is correct
8 Correct 21 ms 760 KB Output is correct
9 Correct 28 ms 640 KB Output is correct
10 Correct 19 ms 768 KB Output is correct
11 Correct 20 ms 768 KB Output is correct
12 Correct 22 ms 640 KB Output is correct
# Verdict Execution time Memory Grader output
1 Execution timed out 5069 ms 5196 KB Time limit exceeded
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 22 ms 1152 KB Output is correct
2 Correct 26 ms 2304 KB Output is correct
3 Correct 30 ms 2560 KB Output is correct
4 Correct 61 ms 2656 KB Output is correct
5 Correct 85 ms 5496 KB Output is correct
6 Correct 83 ms 5496 KB Output is correct
7 Execution timed out 5065 ms 5456 KB Time limit exceeded
8 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 317 ms 5676 KB Output is correct
2 Correct 303 ms 5660 KB Output is correct
3 Correct 666 ms 5012 KB Output is correct
4 Correct 364 ms 4392 KB Output is correct
5 Correct 557 ms 9216 KB Output is correct
6 Correct 747 ms 9704 KB Output is correct
7 Correct 535 ms 9952 KB Output is correct
8 Correct 1036 ms 10004 KB Output is correct
9 Correct 839 ms 9220 KB Output is correct
10 Correct 1046 ms 10064 KB Output is correct
11 Correct 640 ms 9288 KB Output is correct
12 Correct 1617 ms 9988 KB Output is correct