Submission #957122

#	Time	Username	Problem	Language	Result	Execution time	Memory
957122		DeltaStruct	Handcrafted Gift (IOI20_gift)	C++17	Compilation error	0 ms	0 KiB

gift

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

int construct(int n,int m,int[] A,int[] B,int[] C){
  vector<int> D(n); iota(D.begin(),D.end(),0);
  for (int i(0);i < m;++i) if (C[i]==1) D[A[i]] = max(D[A[i]],B[i]);
  set<int> s; string r,u="RB"; int t=0;
  for (int i(0);i < n;++i){
    s.emplace(D[i]),r+=u[t];
    if (s.find(i)!=s.end()) s.erase(i);
    if (s.empty()) t^=1;
  }
  vector<int> acc(1); int cant = 0; for (char a:r) acc.emplace_back(acc.back()+(a=='B'));
  for (int i(0);i < m;++i) if (C[i]==2) if (acc[B[i]+1]-acc[A[i]]==0||acc[B[i]+1]-acc[A[i]]==B[i]-A[i]+1) cant = 1;
  if (cant) return 0;
  craft(r); return 1;
}

Compilation message (stderr)

gift.cpp:5:33: error: expected ',' or '...' before 'A'
    5 | int construct(int n,int m,int[] A,int[] B,int[] C){
      |                                 ^
gift.cpp: In function 'int construct(int, int, int*)':
gift.cpp:7:32: error: 'C' was not declared in this scope
    7 |   for (int i(0);i < m;++i) if (C[i]==1) D[A[i]] = max(D[A[i]],B[i]);
      |                                ^
gift.cpp:7:43: error: 'A' was not declared in this scope
    7 |   for (int i(0);i < m;++i) if (C[i]==1) D[A[i]] = max(D[A[i]],B[i]);
      |                                           ^
gift.cpp:7:63: error: 'B' was not declared in this scope
    7 |   for (int i(0);i < m;++i) if (C[i]==1) D[A[i]] = max(D[A[i]],B[i]);
      |                                                               ^
gift.cpp:15:32: error: 'C' was not declared in this scope
   15 |   for (int i(0);i < m;++i) if (C[i]==2) if (acc[B[i]+1]-acc[A[i]]==0||acc[B[i]+1]-acc[A[i]]==B[i]-A[i]+1) cant = 1;
      |                                ^
gift.cpp:15:49: error: 'B' was not declared in this scope
   15 |   for (int i(0);i < m;++i) if (C[i]==2) if (acc[B[i]+1]-acc[A[i]]==0||acc[B[i]+1]-acc[A[i]]==B[i]-A[i]+1) cant = 1;
      |                                                 ^
gift.cpp:15:61: error: 'A' was not declared in this scope
   15 |   for (int i(0);i < m;++i) if (C[i]==2) if (acc[B[i]+1]-acc[A[i]]==0||acc[B[i]+1]-acc[A[i]]==B[i]-A[i]+1) cant = 1;
      |                                                             ^