제출 #523266

#제출 시각아이디문제언어결과실행 시간메모리
523266lucri콤보 (IOI18_combo)C++17
100 / 100
42 ms552 KiB
#include <cstdio> #include <cstdlib> #include <algorithm> #include <string> #include "combo.h" /*namespace { constexpr int MAX_N = 2000; constexpr int MAX_NUM_MOVES = 8000; int N; std::string S; int num_moves; void wrong_answer(const char *MSG) { printf("Wrong Answer: %s\n", MSG); exit(0); } } // namespace int press(std::string p) { if (++num_moves > MAX_NUM_MOVES) { wrong_answer("too many moves"); } int len = p.length(); if (len > 4 * N) { wrong_answer("invalid press"); } for (int i = 0; i < len; ++i) { if (p[i] != 'A' && p[i] != 'B' && p[i] != 'X' && p[i] != 'Y') { wrong_answer("invalid press"); } } int coins = 0; for (int i = 0, j = 0; i < len; ++i) { if (j < N && S[j] == p[i]) { ++j; } else if (S[0] == p[i]) { j = 1; } else { j = 0; } coins = std::max(coins, j); } return coins; }*/ std::string guess_sequence(int N) { std::string p; int val=press("AB"); if(val>=1) { val=press("A"); if(val==1) p+='A'; else p+='B'; } else { val=press("X"); if(val==1) p+='X'; else p+='Y'; } if(N==1) return p; for(int l=1;l+2<=N;++l) { if(p[0]=='A') { val=press(p+'B'+p+"XB"+p+"XX"+p+"XY"); if(val-l==0) p+='Y'; if(val-l==1) p+='B'; if(val-l==2) p+='X'; } else if(p[0]=='B') { val=press(p+'A'+p+"XA"+p+"XX"+p+"XY"); if(val-l==0) p+='Y'; if(val-l==1) p+='A'; if(val-l==2) p+='X'; } else if(p[0]=='X') { val=press(p+'A'+p+"BA"+p+"BB"+p+"BY"); if(val-l==0) p+='Y'; if(val-l==1) p+='A'; if(val-l==2) p+='B'; } else if(p[0]=='Y') { val=press(p+'A'+p+"XA"+p+"XX"+p+"XB"); if(val-l==0) p+='B'; if(val-l==1) p+='A'; if(val-l==2) p+='X'; } } if(press(p+'A'+p+'B')==N) { if(press(p+'A')==N) p+='A'; else p+='B'; } else { if(press(p+'X')==N) p+='X'; else p+='Y'; } return p; } /*int main() { char buffer[MAX_N + 1]; if (scanf("%s", buffer) != 1) { fprintf(stderr, "Error while reading input\n"); exit(1); } S = buffer; N = S.length(); num_moves = 0; std::string answer = guess_sequence(N); if (answer != S) { wrong_answer("wrong guess"); exit(0); } printf("Accepted: %d\n", num_moves); return 0; }*/
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...