제출 #321614

#제출 시각아이디문제언어결과실행 시간메모리
321614nikatamliani크레이피쉬 글쓰는 기계 (IOI12_scrivener)C++14
34 / 100
1051 ms71900 KiB
#include <bits/stdc++.h> using namespace std; const int N = 1e6 + 5, A = 26; int nodes = 0, pos; int code[N][A], depth[N]; pair<int, char> par[N]; vector<int> v; void TypeLetter(char c) { if(!code[pos][c - 'a']) { code[pos][c - 'a'] = ++nodes; par[nodes] = {pos, c}; depth[nodes] = depth[pos] + 1; } v.push_back(code[pos][c - 'a']); pos = v.back(); } void UndoCommands(int x) { assert((int)v.size() - 1 - x >= 0); pos = v[(int)v.size() - 1 - x]; v.push_back(pos); } char GetLetter(int index) { int size = depth[pos]; int up = size - index - 1; int answer = pos; while(depth[answer] != index + 1) { answer = par[answer].first; } return par[answer].second; } void Init() { } // int main() { // int k; // cin >> k; // while(k--) { // int type; // cin >> type; // if(type == 1) { // char c; // cin >> c; // TypeLetter(c); // } else if(type == 2) { // int x; // cin >> x; // UndoCommands(x); // } else { // int x; // cin >> x; // cout << GetLetter(x) << ' '; // } // } // }

컴파일 시 표준 에러 (stderr) 메시지

scrivener.cpp: In function 'char GetLetter(int)':
scrivener.cpp:24:9: warning: unused variable 'up' [-Wunused-variable]
   24 |     int up = size - index - 1;
      |         ^~
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