제출 #137462

#제출 시각아이디문제언어결과실행 시간메모리
137462MladenP크레이피쉬 글쓰는 기계 (IOI12_scrivener)C++17
100 / 100
883 ms145504 KiB
#include<bits/stdc++.h> #define STIZE(x) fprintf(stderr, "STIZE%d\n", x); #define PRINT(x) fprintf(stderr, "%s = %d\n", #x, x); #define NL(x) printf("%c", " \n"[(x)]); #define lld long long #define pii pair<int,int> #define pb push_back #define fi first #define se second #define mid (l+r)/2 #define endl '\n' #define all(a) begin(a),end(a) #define sz(a) int((a).size()) #define LINF 1000000000000000LL #define INF 1000000000 #define EPS 1e-9 using namespace std; #define MAXN 1000010 #define MAXL 22 int trie[MAXN][27], anc[MAXN][MAXL], dub[MAXN]; vector<int> op; int timer = 0; void Init() { timer = 1; op.pb(1); } void TypeLetter(char L) { int c = L-'a'+1, cur = op.back(); if(trie[cur][c] == 0) { trie[cur][c] = ++timer; anc[timer][0] = cur; dub[timer] = dub[cur] + 1; for(int i = 1; i < MAXL; i++) anc[timer][i] = anc[anc[timer][i-1]][i-1]; } op.pb(trie[cur][c]); } void UndoCommands(int U) { op.pb(op[sz(op)-1-U]); } char GetLetter(int P) { int cur = op.back(); P = dub[cur] - 1 - P; for(int k = MAXL-1; k >= 0; k--) { if((1<<k) <= P) { cur = anc[cur][k]; P -= (1<<k); } } int par = anc[cur][0]; for(int i = 1; i < 27; i++) { if(trie[par][i] == cur) return ('a'+i-1); } }

컴파일 시 표준 에러 (stderr) 메시지

scrivener.cpp: In function 'char GetLetter(int)':
scrivener.cpp:56:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
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