Submission #158479

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
158479	2019-10-17 09:31:54	maruii	조개 줍기 (KOI17_shell)	C++14	100 / 100	619 ms	35748 KiB

shell

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#include <bits/stdc++.h>
using namespace std;
 
int N, f[1505][1505], A[1505][1505], ys[1505], ye[1505];
 
struct BIT {
  int A[1505];
  void update(int x, int v) {
    x++;
    for (; x; x -= x & -x) A[x] += v;
  }
  void update(int s, int e, int v) {
    update(e, v);
    update(s - 1, -v);
  }
  int query(int x) {
    x++;
    int ret = 0;
    for (; x < 1505; x += x & -x) ret += A[x];
    return ret;
  }
} fen[1505];
 
inline int query(int x, int y) { return f[x][y] + fen[x].query(y); }
void up(int x, int y, int c) {
  ye[x] = y;
  while (1) {
    int t = 0;
    if ((c > 0 && y < N && query(x, y + 1) == query(x, y) + A[x][y + 1]) || (c < 0 && y < N && query(x, y + 1) != query(x - 1, y + 1) + A[x][y + 1])) y++;
    else x++;
 
 
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Compilation message (stderr)

shell.cpp: In function 'void up(int, int, int)':
shell.cpp:28:7: warning: unused variable 't' [-Wunused-variable]
   int t = 0;
       ^
shell.cpp: In function 'void lo(int, int, int)':
shell.cpp:40:7: warning: unused variable 't' [-Wunused-variable]
   int t = 0;
       ^

• Subtask 1: 12 / 12
• Subtask 2: 34 / 34
• Subtask 3: 54 / 54