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#877632#9765. Repetitive RoutesGuanYunchangCompile Error//C++203.3kb2025-01-31 23:53:322025-01-31 23:53:32

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answer.code: In function ‘void solve()’:
answer.code:74:5: error: ‘a’ was not declared in this scope
   74 |     a[k] = M;
      |     ^
answer.code:81:5: error: ‘usedv’ was not declared in this scope; did you mean ‘used’?
   81 |     usedv.insert(pii{0, 1});
      |     ^~~~~
      |     used
answer.code:116:29: error: ‘u’ was not declared in this scope
  116 |             auto [al, l] = *u.lower_bound(pii{x, -1});
      |                             ^