Submission #657863

#TimeUsernameProblemLanguageResultExecution timeMemory
657863benjaminkleynVision Program (IOI19_vision)C++17
12 / 100
34 ms4040 KiB
#include <bits/stdc++.h> #include "vision.h" using namespace std; typedef long long ll; void construct_network(int h, int w, int k) { vector<int> rd1(h + w - 1), rd2(h + w - 1); vector<int> ld1(h + w - 1), ld2(h + w - 1); for (int d = 0; d < h + w - 1; d++) { // right-diagonal of (i, j) = i + j vector<int> idx; for (int i = 0; i < h; i++) if (0 <= d - i && d - i < w) idx.push_back(i * w + d - i); // rd1 : is there at least one black pixel on this diagonal? rd1[d] = add_or(idx); // rd2 : are there exactly two black pixels on this diagonal? rd2[d] = add_xor({add_xor(idx), rd1[d]}); // left-diagonal of (i, j) = i - j + (w - 1) idx.clear(); for (int i = 0; i < h; i++) if (0 <= i - d + w - 1 && i - d + w - 1 < w) idx.push_back(i * w + i - d + w - 1); // ld1 : is there at least one black pixel on this diagonal? ld1[d] = add_or(idx); // ld2 : are there exactly two black pixels on this diagonal? ld2[d] = add_xor({add_xor(idx), rd1[d]}); } vector<int> A, B, C, D; for (int d = 0; d + k < h + w - 1; d++) { vector<int> idxR1, idxR2, idxL1, idxL2; for (int i = 0; i < k + 1; i++) { idxR1.push_back(rd1[d + i]); idxR2.push_back(rd2[d + i]); idxL1.push_back(ld1[d + i]); idxL2.push_back(ld2[d + i]); } A.push_back(add_or({add_xor({add_or(idxR1), add_xor(idxR1)}),add_or(idxR2)})); B.push_back(add_or({add_xor({add_or(idxL1), add_xor(idxL1)}),add_or(idxL2)})); } for (int d = 0; d + k - 1 < h + w - 1; d++) { vector<int> idxR1, idxR2, idxL1, idxL2; for (int i = 0; i < k; i++) { idxR1.push_back(rd1[d + i]); idxR2.push_back(rd2[d + i]); idxL1.push_back(ld1[d + i]); idxL2.push_back(ld2[d + i]); } C.push_back(add_or({add_xor({add_or(idxR1), add_xor(idxR1)}),add_or(idxR2)})); D.push_back(add_or({add_xor({add_or(idxL1), add_xor(idxL1)}),add_or(idxL2)})); } int x = add_and({add_or(A), add_or(B)}); int y = add_and({add_or(C), add_or(D)}); add_and({x, add_not(y)}); }
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