Submission #725795

#TimeUsernameProblemLanguageResultExecution timeMemory
725795PixelCatVision Program (IOI19_vision)C++14
14 / 100
9 ms1568 KiB
#include "vision.h" #ifdef NYAOWO #include "grader.cpp" #endif #include <bits/stdc++.h> #define For(i, a, b) for(int i = a; i <= b; i++) #define Forr(i,a, b) for(int i = a; i >= b; i--) #define F first #define S second #define all(x) x.begin(), x.end() #define sz(x) ((int)x.size()) #define eb emplace_back // #define int LL using namespace std; using LL = long long; using pii = pair<int, int>; void construct_network(int H, int W, int K) { // std::vector<int> Ns; // Ns = {0, 1}; // int a = add_and(Ns); // Ns = {0, a}; // int b = add_or(Ns); // Ns = {0, 1, b}; // int c = add_xor(Ns); // add_not(c); vector<vector<int>> row(H); vector<vector<int>> col(W); For(i, 0, H - 1) For(j, 0, W - 1) { int id = i * W + j; row[i].eb(id); col[j].eb(id); } vector<int> or_row(H); vector<int> or_col(W); For(i, 0, H - 1) or_row[i] = add_or(row[i]); For(i, 0, W - 1) or_col[i] = add_or(col[i]); vector<int> adj; int a, b; if(H >= 2) { adj.clear(); For(i, 0, H - 2) { adj.eb(add_and({or_row[i], or_row[i + 1]})); } a = add_and({add_xor(or_col), add_or(adj)}); } if(W >= 2) { adj.clear(); For(i, 0, W - 2) { adj.eb(add_and({or_col[i], or_col[i + 1]})); } b = add_and({add_xor(or_row), add_or(adj)}); } if(H >= 2 && W >= 2) { add_or({a, b}); } }

Compilation message (stderr)

vision.cpp: In function 'void construct_network(int, int, int)':
vision.cpp:60:22: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized]
   60 |         add_or({a, b});
      |                      ^
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