Submission #396479

#	Time	Username	Problem	Language	Result	Execution time	Memory
396479		Kevin_Zhang_TW	벽 칠하기 (APIO20_paint)	C++17	0 / 100	1 ms	204 KiB

paint

#include <bits/stdc++.h>
#include "paint.h"
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l)==r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif
const int inf = 1e9 + 7;

int minimumInstructions(
    int N, int M, int K, std::vector<int> C,
    std::vector<int> A, std::vector<std::vector<int>> B) {

	for (int i = 0;i < M;++i) 
		sort(AI(B[i]));

	vector<int> ok;

	for (int i = 0;i <= N-M;++i) {

		auto valid = [&](int i, int j) {
			for (int k = 0;k < M;++k) {
				if (!binary_search(AI(B[(j+k)%M]), C[i+k]))
					return false;
			}
			return true;
		};

		for (int j = 0;j < M;++j)
			if (valid(i, j)) {
				ok.pb(i);
				break;
			}
	}

	// good is the max index I can take
	int res = 0, good = 0, bst = -1;

	ok.pb(N);

	for (int id : ok) {
		DE(res, good, bst, id);
		if (id > good) {
			if (bst == -1) return -1;
			++res;
			good = bst + M;
			bst = -1;
		}
		if (id <= good) chmax(bst, id);
	}
	return res;
}

Compilation message (stderr)

paint.cpp: In function 'int minimumInstructions(int, int, int, std::vector<int>, std::vector<int>, std::vector<std::vector<int> >)':
paint.cpp:15:17: warning: statement has no effect [-Wunused-value]
   15 | #define DE(...) 0
      |                 ^
paint.cpp:52:3: note: in expansion of macro 'DE'
   52 |   DE(res, good, bst, id);
      |   ^~

• Subtask 1: 0 / 12
• Subtask 2: 0 / 15
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 37