結果

問題 No.921 ずんだアロー
ユーザー butsurizukibutsurizuki
提出日時 2019-11-08 21:52:56
言語 C
(gcc 12.3.0)
結果
AC  
実行時間 14 ms / 2,000 ms
コード長 5,728 bytes
コンパイル時間 421 ms
コンパイル使用メモリ 32,760 KB
実行使用メモリ 7,776 KB
最終ジャッジ日時 2023-10-13 03:48:05
合計ジャッジ時間 1,763 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge13
このコードへのチャレンジ（β）

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
6,860 KB
testcase_01 AC 2 ms
6,332 KB
testcase_02 AC 3 ms
6,796 KB
testcase_03 AC 3 ms
6,516 KB
testcase_04 AC 3 ms
7,256 KB
testcase_05 AC 3 ms
7,068 KB
testcase_06 AC 2 ms
6,032 KB
testcase_07 AC 3 ms
7,116 KB
testcase_08 AC 3 ms
7,708 KB
testcase_09 AC 3 ms
7,004 KB
testcase_10 AC 12 ms
6,960 KB
testcase_11 AC 14 ms
7,776 KB
testcase_12 AC 5 ms
7,028 KB
testcase_13 AC 9 ms
6,520 KB
testcase_14 AC 11 ms
6,532 KB
testcase_15 AC 7 ms
6,408 KB
testcase_16 AC 3 ms
7,076 KB
testcase_17 AC 11 ms
6,452 KB
testcase_18 AC 13 ms
6,600 KB
testcase_19 AC 13 ms
7,076 KB
testcase_20 AC 13 ms
6,436 KB
testcase_21 AC 13 ms
6,740 KB
testcase_22 AC 14 ms
6,984 KB
testcase_23 AC 13 ms
7,276 KB
testcase_24 AC 13 ms
6,656 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.c:16:5: 警告: conflicting types for built-in function ‘round’; expected ‘double(double)’ [-Wbuiltin-declaration-mismatch]
   16 | int round(int a,int b){if((a%b)*2 >= b){return (a/b)+1;}return a/b;}
      |     ^~~~~
main.c:8:1: 備考: ‘round’ is declared in header ‘<math.h>’
    7 | #include<time.h>
  +++ |+#include <math.h>
    8 | #define inf 1072114514
main.c:17:5: 警告: conflicting types for built-in function ‘ceil’; expected ‘double(double)’ [-Wbuiltin-declaration-mismatch]
   17 | int ceil(int a,int b){if(a%b==0){return a/b;}return (a/b)+1;}
      |     ^~~~
main.c:17:5: 備考: ‘ceil’ is declared in header ‘<math.h>’
main.c:23:5: 警告: conflicting types for built-in function ‘pow’; expected ‘double(double,  double)’ [-Wbuiltin-declaration-mismatch]
   23 | int pow(int a,int b){int i,r=1;for(i=1;i<=b;i++){r*=a;}return r;}
      |     ^~~
main.c:23:5: 備考: ‘pow’ is declared in header ‘<math.h>’
main.c:31:11: 警告: conflicting types for built-in function ‘llround’; expected ‘long long int(double)’ [-Wbuiltin-declaration-mismatch]
   31 | long long llround(long long a,long long b){if((a%b)*2 >= b){return (a/b)+1;}return a/b;}
      |           ^~~~~~~
main.c:31:11: 備考: ‘llround’ is declared in header ‘<math.h>’

ソースコード

diff # 

//set many funcs template
//Ver.20190820
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<stdbool.h>
#include<time.h>
#define inf 1072114514
#define llinf 4154118101919364364
#define mod 1000000007
#define pi 3.1415926535897932384

int max(int a,int b){if(a>b){return a;}return b;}
int min(int a,int b){if(a<b){return a;}return b;}
int zt(int a,int b){return max(a,b)-min(a,b);}
int round(int a,int b){if((a%b)*2 >= b){return (a/b)+1;}return a/b;}
int ceil(int a,int b){if(a%b==0){return a/b;}return (a/b)+1;}
int gcd(int a,int b){int c;while(b!=0){c=a%b;a=b;b=c;}return a;}
int lcm(int a,int b){int c=gcd(a,b);a/=c;return a*b;}
int nCr(int a,int b){int i,r=1;for(i=1;i<=b;i++){r*=(a+1-i);r/=i;}return r;}
int nHr(int a,int b){return nCr(a+b-1,b);}
int fact(int a){int i,r=1;for(i=1;i<=a;i++){r*=i;}return r;}
int pow(int a,int b){int i,r=1;for(i=1;i<=b;i++){r*=a;}return r;}
int dsum(int x){int r=0;while(x){r+=(x%10);x/=10;}return r;}
int dsumb(int x,int b){int r=0;while(x){r+=(x%b);x/=b;}return r;}
int sankaku(int x){return ((1+x)*x)/2;}
void swap(int *a,int *b){int c;c=(*a);(*a)=(*b);(*b)=c;}
long long llmax(long long a,long long b){if(a>b){return a;}return b;}
long long llmin(long long a,long long b){if(a<b){return a;}return b;}
long long llzt(long long a,long long b){return llmax(a,b)-llmin(a,b);}
long long llround(long long a,long long b){if((a%b)*2 >= b){return (a/b)+1;}return a/b;}
long long llceil(long long a,long long b){if(a%b==0){return a/b;}return (a/b)+1;}
long long llgcd(long long a,long long b){long long c;while(b!=0){c=a%b;a=b;b=c;}return a;}
long long lllcm(long long a,long long b){long long c=llgcd(a,b);a/=c;return a*b;}
long long llnCr(long long a,long long b){long long i,r=1;for(i=1;i<=b;i++){r*=(a+1-i);r/=i;}return r;}
long long llnHr(long long a,long long b){return llnCr(a+b-1,b);}
long long llfact(long long a){long long i,r=1;for(i=1;i<=a;i++){r*=i;}return r;}
long long llpow(long long a,long long b){long long i,r=1;for(i=1;i<=b;i++){r*=a;}return r;}
long long lldsum(long long x){long long r=0;while(x){r+=(x%10);x/=10;}return r;}
long long lldsumb(long long x,long long b){long long r=0;while(x){r+=(x%b);x/=b;}return r;}
long long llsankaku(long long x){return ((1+x)*x)/2;}
void llswap(long long *a,long long *b){long long c;c=(*a);(*a)=(*b);(*b)=c;}
double dbmax(double a,double b){if(a>b){return a;}return b;}
double dbmin(double a,double b){if(a<b){return a;}return b;}
double dbzt(double a,double b){return dbmax(a,b)-dbmin(a,b);}
void dbswap(double *a,double *b){double c;c=(*a);(*a)=(*b);(*b)=c;}
void chswap(char *a,char *b){char c;c=(*a);(*a)=(*b);(*b)=c;}
int sortfncsj(const void *a,const void *b){if(*(int *)a>*(int *)b){return 1;}if(*(int *)a==*(int *)b){return 0;}return -1;}
int sortfnckj(const void *a,const void *b){if(*(int *)a<*(int *)b){return 1;}if(*(int *)a==*(int *)b){return 0;}return -1;}
int llsortfncsj(const void *a,const void *b){if(*(long long *)a>*(long long *)b){return 1;}if(*(long long *)a==*(long long *)b){return 0;}return -1;}
int llsortfnckj(const void *a,const void *b){if(*(long long *)a<*(long long *)b){return 1;}if(*(long long *)a==*(long long *)b){return 0;}return -1;}
int dbsortfncsj(const void *a,const void *b){if(*(double *)a>*(double *)b){return 1;}if(*(double *)a==*(double *)b){return 0;}return -1;}
int dbsortfnckj(const void *a,const void *b){if(*(double *)a<*(double *)b){return 1;}if(*(double *)a==*(double *)b){return 0;}return -1;}
int strsortfncsj(const void *a,const void *b){return strcmp((char *)a,(char *)b);}
int strsortfnckj(const void *a,const void *b){return strcmp((char *)b,(char *)a);}
int chsortfncsj(const void *a,const void *b){if(*(char *)a>*(char *)b){return 1;}if(*(char *)a==*(char *)b){return 0;}return -1;}
int chsortfnckj(const void *a,const void *b){if(*(char *)a<*(char *)b){return 1;}if(*(char *)a==*(char *)b){return 0;}return -1;}

void shuffledget(int x[],int n){
    int i,b[524288],p,c;
    for(i=0;i<n;i++){
        b[i]=i;
    }
    for(i=n;i>=1;i--){
        p=rand()%i;
        c=b[i-1];b[i-1]=b[p];b[p]=c;
    }
    for(i=0;i<n;i++){
        scanf("%d",&x[b[i]]);
    }
}

int dx4[4]={1,-1,0,0};
int dy4[4]={0,0,1,-1};
int dx8[8]={-1,-1,-1,0,0,1,1,1};
int dy8[8]={-1,0,1,-1,1,-1,0,1};

int search(int x,int a[],int n){
    int st=0,fi=n-1,te;
    while(st<=fi){
        te=(st+fi)/2;
        if(a[te]<x){st=te+1;}else{fi=te-1;}
    }
    return st;
}

void prarr(int arr[],int n){
  int i;
  for(i=0;i<n;i++){
    if(i){printf(" ");}
    printf("%d",arr[i]);
  }
  printf("\n");
  return;
}

void getperm(int a[],int n){
  int i,p;
  for(i=0;i<n;i++){
    a[i]=i;
  }
  for(i=n-1;i>=1;i--){
    p=rand()%(i+1);
    swap(&a[p],&a[i]);
  }
}

typedef struct{
int val;
int node;
}sd;

int sdsortfnc(const void *a,const void *b){
if(((sd*)a)->val < ((sd*)b)->val){return -1;}
if(((sd*)a)->val > ((sd*)b)->val){return 1;}
return 0;
}

void coordinate_comp(int a[],int n){
  int i,c=0;
  sd dat[524288];
  for(i=0;i<n;i++){
    dat[i].val=a[i];
    dat[i].node=i;
  }
  qsort(dat,n,sizeof(dat[0]),sdsortfnc);
  a[dat[0].node]=c;
  for(i=1;i<n;i++){
    if(dat[i-1].val!=dat[i].val){c++;}
    a[dat[i].node]=c;
  }
}

int main(void){
  //srand(time(0));
  int i,j,n,m,k,a[524288],b[524288],c,h,w,r=0,l,t;
  int dp[524288][2]={0};
  double d;
  char s[524288];
  scanf("%d",&n);
  for(i=0;i<n;i++){
      scanf("%d",&a[i]);
  }
  a[n]=inf;
  dp[0][0]=0;
  dp[0][1]=1;
  for(i=1;i<n;i++){
      if(a[i-1]==a[i]){
          dp[i][1]=max(dp[i-1][0],dp[i-1][1])+1;
          dp[i][0]=max(dp[i-1][0],dp[i-1][1]);
      }
      else{
          dp[i][1]=dp[i-1][0]+1;
          dp[i][0]=max(dp[i-1][0],dp[i-1][1]);
      }
  }
  printf("%d\n",max(dp[n-1][0],dp[n-1][1]));
  return 0;
}
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