Submission #1154763

#	Time	Username	Problem	Language	Result	Execution time	Memory
1154763		weakweakweak	Vision Program (IOI19_vision)	C++20	Compilation error	0 ms	0 KiB

vision

#include "vision.h"
#include <bits/stdc++.h>
using namespace std;

void construct_network(int H, int W, int K) {
	if ( H * W <= 900) {
		int id = H*W-1;
		vector<int > finid;
		for (int i = 0; i < H; i++) {
			for (int j = 0; j < W; j++) {
				vector<int> v1;
				for (int i2 = 0; i2 < H; i2++) for (int j2 = 0; j2 < W; j2++) {
					if (abs(i2-i) + abs(j2-j) == K) v1.push_back(i2*W+j2);
				}
				if (v1.empty()) continue;
				add_or(v1); id++;
				add_and({id, i*W+j});id++;
				finid.push_back(id);
			}
		}
		add_or(finid);
		return;
	}

	vector<int> prime = {2, 3, 5, 7, 17, 23, 31, 127, 391};
	vector<int> chp;
	for (int p : prime) {
		if (K % p and chp.size() < 5) {
			chp.push_back(p);
		}
	}
// 29 17 51 89
	int id = H*W-1;
	vector<int> chpid;
	for (int p : chp) {
		vector<int> rs[400], rs2[400];
		for (int i = 0; i < H; i++) {
			for (int j = 0; j < W; j++) {
				rs[(i+j) % p] . push_back(i*W + j);
				rs2[((i-j)%p+p)%p]. push_back(i*W + j);
			}
		}
		int r = K % p;
		vector<int> ids[2];
		int good[2] = {0};
		for (int t = 0; t < 2; t++) {
			for (int r1 = 0; r1 < p; r1++) {
				int r2 = (r1 + r) %p, r3 = 399;
				// if (r2 >= p) continue;
				if (rs[r1].empty() or (rs[r2].empty() and rs[r3].empty())) continue;
				auto tmp = rs[r2];
				tmp.insert(tmp.end(), rs[r3].begin(), rs[r3].end());
				add_or(rs[r1]); id++;
				add_or(tmp); id++;
				add_and({id-1, id});id++;
				ids[t].push_back(id);
			}
			for (int j = 0; j < 400; j++) rs[j] = rs2[j];
			if (ids[t].empty()) continue;
			add_or(ids[t]); id++;
			good[t] = id;
		}
		if (!good[0] and !good[1]) continue;
		if (good[0] and good[1]) {
			if (K==1) add_and({good[0], good[1]}); id++;
			else add_or({good[0], good[1]}); id++;
			chpid.push_back(id);
		}
		else {
			// continue;
			int mx = max(good[0], good[1]);
			chpid.push_back(mx);
		}
	}
	// cout << id << '\n';
	add_and(chpid);
}

Compilation message (stderr)

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:66:25: error: expected '}' before 'else'
   66 |                         else add_or({good[0], good[1]}); id++;
      |                         ^~~~
vision.cpp:64:42: note: to match this '{'
   64 |                 if (good[0] and good[1]) {
      |                                          ^
vision.cpp:69:17: error: 'else' without a previous 'if'
   69 |                 else {
      |                 ^~~~
vision.cpp:71:38: error: 'good' was not declared in this scope
   71 |                         int mx = max(good[0], good[1]);
      |                                      ^~~~
vision.cpp: At global scope:
vision.cpp:76:16: error: expected constructor, destructor, or type conversion before '(' token
   76 |         add_and(chpid);
      |                ^
vision.cpp:77:1: error: expected declaration before '}' token
   77 | }
      | ^