제출 #772807

#제출 시각아이디문제언어결과실행 시간메모리
772807SharkyPaint By Numbers (IOI16_paint)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; const int maxn = 2e5 + 1; const int maxk = 101; int n, k, c[maxk], d[maxn]; string s; bool L[maxn][maxk], R[maxn][maxk], possible[maxn][2]; int lst[maxn][maxk], nxt[maxn][maxk], lstw[maxn], nxtw[maxn], lstb[maxn], nxtb[maxn]; struct node { int i, j, l, r; node(int i, int j, int l, int r): i(i), j(j), l(l), r(r) {} }; vector<node> b; vector<pair<int, int>> st; bool ok(int id) { return (id >= 1 && id <= n); } string solve_puzzle(string s, int[] C) { n = s.length(); s = "a" + s; s += 'a'; lstw[0] = lstb[0] = 0; nxtb[n + 1] = nxtw[n + 1] = n + 1; for (int i = 1; i <= n; i++) { lstw[i] = lstw[i - 1]; lstb[i] = lstb[i - 1]; if (s[i] == '_') lstw[i] = i; else if (s[i] == 'X') lstb[i] = i; } for (int i = n; i >= 1; i--) { nxtb[i] = nxtb[i + 1]; nxtw[i] = nxtw[i + 1]; if (s[i] == '_') nxtw[i] = i; else if (s[i] == 'X') nxtb[i] = i; } for (int i = 0; i <= n + 1; i++) for (int j = 0; j <= k; j++) lst[i][j] = nxt[i][j] = -1; for (int i = 1; i <= k; i++) c[i] = C[i - 1]; for (int i = 0; i <= n; i++) { if (s[i] == 'X') break; lst[i][0] = i, L[i][0] = 1; } for (int i = 1; i <= n; i++) { for (int j = 1; j <= k; j++) { lst[i][j] = lst[i - 1][j]; if (s[i] == '_') continue; int idx = i - c[j]; if (idx < 0 || idx > n || s[idx] == 'X' || s[i+1] == 'X') continue; int next_white = nxtw[idx + 1]; if (next_white <= i) continue; if (idx == 0 && j > 1) continue; if ((idx == 0 && j == 1) || lst[idx - 1][j - 1] != -1) { if (!(idx == 0 && j == 1)) { int pos = lst[idx - 1][j - 1]; int next_black = nxtb[pos + 1]; if (next_black <= idx) continue; // cout << "debug: " << idx << ' ' << j << ' ' << lst[idx - 1][j - 1] << '\n'; } L[i][j] = 1; lst[i][j] = i; b.emplace_back(i, j, idx + 1, i); } // cout << i << ' ' << j << ' ' << L[i][j] << '\n'; } } for (int i = n + 1; i >= 1; i--) { if (s[i] == 'X') break; nxt[i][0] = i, R[i][0] = 1; } reverse(c + 1, c + k + 1); for (int i = n; i >= 1; i--) { for (int j = 1; j <= k; j++) { nxt[i][j] = nxt[i + 1][j]; if (s[i] == '_') continue; int idx = i + c[j]; if (idx <= 0 || idx > n + 1 || s[idx] == 'X' || s[i-1] == 'X') continue; int last_white = lstw[idx - 1]; if (last_white >= i) continue; if (idx == n + 1 && j > 1) continue; if ((idx == n + 1 && j == 1) || nxt[idx + 1][j - 1] != -1) { if (!(idx == n + 1 && j == 1)) { int pos = nxt[idx + 1][j - 1]; int next_black = lstb[pos - 1]; if (next_black >= idx) continue; // cout << "debug: " << idx << ' ' << j << ' ' << lst[idx - 1][j - 1] << '\n'; } R[i][j] = 1; nxt[i][j] = i; } // cout << i << ' ' << j << ' ' << R[i][j] << '\n'; } } for (int i = 1; i <= n; i++) { for (int j = 0; j <= k; j++) { if (lst[i - 1][j] != -1 && nxt[i + 1][k - j] != -1 && s[i] != 'X') possible[i][0] = 1; } } for (auto& [i, j, l, r] : b) { if (i == n && j != k) continue; if (i == n || (L[i][j] && s[i + 1] != 'X' && nxt[i + 2][k - j] != -1)) { d[l]++, d[r + 1]--; // cout << l << ' ' << r << '\n'; } } for (int i = 1; i <= n; i++) { d[i] += d[i - 1]; possible[i][1] = !!(d[i] > 0); } string ans; for (int i = 1; i <= n; i++) { if (possible[i][0] && possible[i][1]) ans += '?'; else if (possible[i][0]) ans += '_'; else if (possible[i][1]) ans += 'X'; // else assert(false); } return ans; }

컴파일 시 표준 에러 (stderr) 메시지

paint.cpp:24:37: error: expected ',' or '...' before 'C'
   24 | string solve_puzzle(string s, int[] C) {
      |                                     ^
paint.cpp: In function 'std::string solve_puzzle(std::string, int*)':
paint.cpp:43:41: error: 'C' was not declared in this scope
   43 |     for (int i = 1; i <= k; i++) c[i] = C[i - 1];
      |                                         ^