Submission #1253726

#TimeUsernameProblemLanguageResultExecution timeMemory
1253726zipdang04Obstacles for a Llama (IOI25_obstacles)C++20
10 / 100
74 ms8264 KiB
#include "obstacles.h" #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; typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set; */ typedef long long ll; typedef long double ld; typedef pair<int, int> pii; typedef pair<ll, ll> pll; template <class T> using PQMax = priority_queue<T>; template <class T> using PQMin = priority_queue<T, vector<T>, greater<T>>; template <class T1, class T2> void maximize(T1 &a, T2 b){ if (b > a) a = b; } template <class T1, class T2> void minimize(T1 &a, T2 b){ if (b < a) a = b; } template <class T> void read(T &number) { bool negative = false; register int c; number = 0; c = getchar(); while (c != '-' && !isalnum(c)) c = getchar(); if (c=='-'){ negative = true; c = getchar(); } for (; (c>47 && c<58); c=getchar()) number = number *10 + c - 48; if (negative) number *= -1; } template <class T, class ...Ts> void read(T &a, Ts& ... args){ read(a); read(args...); } /* struct Node { int node, len; Node() {node = len = 0;} Node(int node, int len) {this -> node = node, this -> len = len;} }; typedef vector<Node> vg; */ #define fi first #define se second #define FOR(type, i, a, b) for(type i = (a); i <= (b); i++) #define REV(type, i, b, a) for(type i = (b); i >= (a); i--) #define testBit(n, bit) (((n) >> (bit)) & 1) #define flipBit(n, bit) ((n) ^ (1ll << (bit))) #define cntBit(n) __builtin_popcount(n) #define cntBitll(n) __builtin_popcountll(n) #define log2(n) (31 - __builtin_clz(n)) #define log2ll(n) (63 - __builtin_clzll(n)) #define CURRENT_TIMESTAMP chrono::steady_clock::now().time_since_epoch().count() #define randomize mt19937_64 mt(CURRENT_TIMESTAMP) #define MAX 200001 #define MOD 1000000007 int nT, nH; int T[MAX]; int H[MAX]; namespace Subtask1 { bool firstTime = true; vector<int> prv; void preprocess() { prv.resize(nH + 1, 0); FOR(int, i, 1, nH) prv[i] = (T[1] <= H[i]) ? 0 : ( (prv[i-1] == 0) ? i : prv[i-1] ); } bool solve(int S, int D){ if (firstTime) { firstTime = false; preprocess(); } return (prv[D] <= S); } } void initialize(std::vector<int> _T, std::vector<int> _H) { nT = _T.size(), nH = _H.size(); FOR(int, i, 1, nT) T[i] = _T[i-1]; FOR(int, i, 1, nH) H[i] = _H[i-1]; return; } bool can_reach(int L, int R, int S, int D) { S++, D++; if (S > D) swap(S, D); // 1S -> 1D return Subtask1::solve(S, D); }

Compilation message (stderr)

obstacles.cpp: In function 'void read(T&)':
obstacles.cpp:30:18: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   30 |     register int c;
      |                  ^
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