#555493 (C++17) No.1231 Make a Multiple of Ten

• 問題: No.1231 Make a Multiple of Ten
• ユーザー: LayCurse
• 提出日時: 2020-09-19 00:28:06
• 言語: C++17 (gcc 13.3.0 + boost 1.87.0)
• 結果: AC
• 実行時間: 14 ms / 2,000 ms
• コード長: 2,240 bytes
• コンパイル時間: 2,798 ms
• コンパイル使用メモリ: 214,112 KB
• 最終ジャッジ日時: 2025-01-14 18:10:39
• ジャッジサーバーID （参考情報）: judge3 / judge2

ファイルパターン	結果
sample	AC * 3
other	AC * 13

ソースコード

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#pragma GCC optimize ("Ofast")
#include<bits/stdc++.h>
using namespace std;
inline int my_getchar_unlocked(){
  static char buf[1048576];
  static int s = 1048576;
  static int e = 1048576;
  if(s == e && e == 1048576){
    e = fread_unlocked(buf, 1, 1048576, stdin);
    s = 0;
  }
  if(s == e){
    return EOF;
  }
  return buf[s++];
}
inline void rd(int &x){
  int k;
  int m=0;
  x=0;
  for(;;){
    k = my_getchar_unlocked();
    if(k=='-'){
      m=1;
      break;
    }
    if('0'<=k&&k<='9'){
      x=k-'0';
      break;
    }
  }
  for(;;){
    k = my_getchar_unlocked();
    if(k<'0'||k>'9'){
      break;
    }
    x=x*10+k-'0';
  }
  if(m){
    x=-x;
  }
}
inline int rd_int(void){
  int x;
  rd(x);
  return x;
}
struct MY_WRITER{
  char buf[1048576];
  int s;
  int e;
  MY_WRITER(){
    s = 0;
    e = 1048576;
  }
  ~MY_WRITER(){
    if(s){
      fwrite_unlocked(buf, 1, s, stdout);
    }
  }
}
;
MY_WRITER MY_WRITER_VAR;
void my_putchar_unlocked(int a){
  if(MY_WRITER_VAR.s == MY_WRITER_VAR.e){
    fwrite_unlocked(MY_WRITER_VAR.buf, 1, MY_WRITER_VAR.s, stdout);
    MY_WRITER_VAR.s = 0;
  }
  MY_WRITER_VAR.buf[MY_WRITER_VAR.s++] = a;
}
inline void wt_L(char a){
  my_putchar_unlocked(a);
}
inline void wt_L(int x){
  int s=0;
  int m=0;
  char f[10];
  if(x<0){
    m=1;
    x=-x;
  }
  while(x){
    f[s++]=x%10;
    x/=10;
  }
  if(!s){
    f[s++]=0;
  }
  if(m){
    my_putchar_unlocked('-');
  }
  while(s--){
    my_putchar_unlocked(f[s]+'0');
  }
}
template<class S, class T> inline S chmax(S &a, T b){
  if(a<b){
    a=b;
  }
  return a;
}
int A;
int dp[10];
int tmp[10];
int main(){
  int Q5VJL1cS, i;
  for(i=(1);i<(10);i++){
    dp[i] = -1073709056;
  }
  int e98WHCEY = rd_int();
  for(Q5VJL1cS=(0);Q5VJL1cS<(e98WHCEY);Q5VJL1cS++){
    A = rd_int() % 10;
    for(i=(0);i<(10);i++){
      tmp[i] = dp[i];
    }
    for(i=(0);i<(10);i++){
      chmax(dp[(i+A)%10], tmp[i] + 1);
    }
  }
  wt_L(dp[0]);
  wt_L('\n');
  return 0;
}
// cLay varsion 20200916-1
// --- original code ---
// int A;
// int dp[10], tmp[10];
// {
//   rep(i,1,10) dp[i] = -int_inf;
//   REP(rd_int()){
//     A = rd_int() % 10;
//     rep(i,10) tmp[i] = dp[i];
//     rep(i,10) dp[(i+A)%10] >?= tmp[i] + 1;
//   }
//   wt(dp[0]);
// }
 
 
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