Submission #1040436

#TimeUsernameProblemLanguageResultExecution timeMemory
1040436nightfalComparing Plants (IOI20_plants)C++14
0 / 100
1 ms600 KiB
#include "plants.h" static std:: vector<int> inc,dec; // void print(std::vector<int> &v) {for(int elem: v) std::cout << elem << " "; std::cout << std::endl;} void init(int k, std::vector<int> r) { int n = r.size(); if(k==2) { inc.resize(n); dec.resize(n); for(int i=0; i<n; i++) {inc[i] = dec[i] = i;} int s; for(s=0; s<n; s++) {if (r[s]==0) break;} for(int i=s-1+n; i>=s+1; i--) {if (r[i%n]) inc[i%n] = inc[(i+1)%n];} for(s=0; s<n; s++) {if (r[s]) break;} for(int i=s-1+n; i>=s+1; i--) {if (r[i%n]==0) dec[i%n] = dec[(i+1)%n];} // print(inc); print(dec); } return; } int subtask1(int x, int y) { if (x<y) { if (y<= dec[x] or x<= inc[y] and inc[y] < y) return 1; else if (y <= inc[x] or x<= dec[y] and dec[y] < y) return -1; } else { if (y<= inc[x] or x<= dec[y] and dec[y] < y) return 1; else if (y <= dec[x] or x<= inc[y] and inc[y] < y) return -1; } return 0; } int compare_plants(int x, int y) { return subtask1(x,y); return 0; }

Compilation message (stderr)

plants.cpp: In function 'int subtask1(int, int)':
plants.cpp:21:36: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   21 |       if (y<= dec[x] or x<= inc[y] and inc[y] < y) return 1;
      |                         ~~~~~~~~~~~^~~~~~~~~~~~~~
plants.cpp:22:42: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   22 |       else if (y <= inc[x] or x<= dec[y] and dec[y] < y) return -1;
      |                               ~~~~~~~~~~~^~~~~~~~~~~~~~
plants.cpp:25:35: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   25 |      if (y<= inc[x] or x<= dec[y] and dec[y] < y) return 1;
      |                        ~~~~~~~~~~~^~~~~~~~~~~~~~
plants.cpp:26:42: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   26 |       else if (y <= dec[x] or x<= inc[y] and inc[y] < y) return -1;
      |                               ~~~~~~~~~~~^~~~~~~~~~~~~~
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