Submission #543271

#	Time	Username	Problem	Language	Result	Execution time	Memory
543271		okkuu	Laugh Analysis (IOI16_laugh)	C++17	100 / 100	2 ms	636 KiB

laugh

//Source.cpp
//いつもの
#ifdef LOCAL
#define _USE_MATH_DEFINES
#include<iostream>
#include<string>
#include<vector>
#include<stack>
#include<queue>
#include<set>
#include<map>
#include<unordered_set>
#include<unordered_map>
#include<list>
#include<array>
#include<algorithm>
#include<numeric>
#include<cmath>
#include<climits>
#include<iomanip>
#include<cctype>
#include<sstream>
#include<regex>
#include<bitset>
#include<random>
#include<complex>
#include<cassert>
#else
#include<bits/stdc++.h>
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#ifdef ONLINE_JUDGE
#include<atcoder/all>
using namespace atcoder;
#else
#define gcd __gcd
#define lcm __detail::__lcm
#endif
#endif
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#ifdef LOCAL
//*
#include<atcoder/all>
using namespace atcoder;
//*/
unsigned popcount(unsigned x){
	return __popcnt(x);
}
unsigned popcountll(ull x){
	return __popcnt64(x);
}
unsigned parity(unsigned x){
	return popcount(x)%2;
}
unsigned parityll(ull x){
	return popcountll(x)%2;
}
unsigned clz(unsigned x){
	if(x==0)
		throw;
	unsigned cnt=__lzcnt(x);
	return cnt;
}
unsigned clzll(ull x){
	if(x==0)
		throw;
	unsigned cnt=__lzcnt64(x);
	return cnt;
}
unsigned ctz(unsigned x){
	if(x==0)
		throw;
	x&=~x+1;
	unsigned cnt=0;
	if(x&0xffff0000)
		cnt|=16;
	if(x&0xff00ff00)
		cnt|=8;
	if(x&0xf0f0f0f0)
		cnt|=4;
	if(x&0xcccccccc)
		cnt|=2;
	if(x&0xaaaaaaaa)
		cnt|=1;
	return cnt;
}
unsigned ctzll(ull x){
	if(x==0)
		throw;
	x&=~x+1;
	unsigned cnt=0;
	if(x&0xffffffff00000000)
		cnt|=32;
	if(x&0xffff0000ffff0000)
		cnt|=16;
	if(x&0xff00ff00ff00ff00)
		cnt|=8;
	if(x&0xf0f0f0f0f0f0f0f0)
		cnt|=4;
	if(x&0xcccccccccccccccc)
		cnt|=2;
	if(x&0xaaaaaaaaaaaaaaaa)
		cnt|=1;
	return cnt;
}
unsigned ffs(unsigned x){
	if(x==0)
		return 0;
	return ctz(x)+1;
}
unsigned ffsll(ull x){
	if(x==0)
		return 0;
	return ctzll(x)+1;
}
#define __builtin_popcount popcount
#define __builtin_popcountll popcountll
#define __builtin_parity parity
#define __builtin_parityll parityll
#define __builtin_clz clz
#define __builtin_clzll clzll
#define __builtin_ctz ctz
#define __builtin_ctzll ctzll
#define __builtin_ffs ffs
#define __builtin_ffsll ffsll
#endif
constexpr int mod=1e9+7;
constexpr int Mod=998244353;
constexpr int inf=mod;
constexpr ll linf=(ll)mod*mod;
struct fastio{
	fastio(){
		cin.tie(0);
		ios::sync_with_stdio(0);
		cout<<fixed<<setprecision(20);
	};
}fio;
template<class T>
bool chmax(T&a,const T&b){
	if(a<b){
		a=b;
		return 1;
	}
	return 0;
}
template<class T>
bool chmin(T&a,const T&b){
	if(a>b){
		a=b;
		return 1;
	}
	return 0;
}
int longest_laugh(string s){
	int ans=0,tmp=0;
	for(int i=0;i<s.size();i++){
		if(i!=0&&(s[i-1]=='a'&&s[i]=='h'||s[i-1]=='h'&&s[i]=='a'))
			tmp++;
		else if(s[i]=='a'||s[i]=='h')
			tmp=1;
		else
			tmp=0;
		chmax(ans,tmp);
	}
	return ans;
}

Compilation message (stderr)

laugh.cpp: In function 'int longest_laugh(std::string)':
laugh.cpp:159:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  159 |  for(int i=0;i<s.size();i++){
      |              ~^~~~~~~~~
laugh.cpp:160:24: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  160 |   if(i!=0&&(s[i-1]=='a'&&s[i]=='h'||s[i-1]=='h'&&s[i]=='a'))

• Subtask 1: 21 / 21
• Subtask 2: 26 / 26
• Subtask 3: 53 / 53