Submission #735495

#	Time	Username	Problem	Language	Result	Execution time	Memory
735495		keisuke6	Painting Walls (APIO20_paint)	C++14	12 / 100	120 ms	12696 KiB

paint

#include "paint.h"
#include <iostream>
#include <vector>
#include <map>
using namespace std;
int minimumInstructions(int N, int M, int K, vector<int> C,vector<int> A, vector<vector<int>> B){
  map<int,int> m;// c, p
  vector<int> AA(N);
  for(int i=0;i<M;i++){
    for(int x:B[i]){
      m[x] = i;
    }
  }
  for(int i=0;i<N;i++){
    if(!m.count(C[i])) return -1;
    AA[i] = m[C[i]];
  }
  vector<int> T = {0};
  for(int i=1;i<N;i++){
    if((AA[i-1]+1)%M != AA[i]){
      T.push_back(i);
    }
  }
  T.push_back(N);
  int ans = 0;
  bool ok = false;
  for(int i=1;i<T.size();i++){
    if(T[i]-T[i-1] < M) return -1;
    ans += (T[i]-T[i-1]-1)/M+1;
  }
  return ans;
}

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:27:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |   for(int i=1;i<T.size();i++){
      |               ~^~~~~~~~~
paint.cpp:26:8: warning: unused variable 'ok' [-Wunused-variable]
   26 |   bool ok = false;
      |        ^~

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