제출 #591318

#제출 시각아이디문제언어결과실행 시간메모리
591318VanillaPaint By Numbers (IOI16_paint)C++17
7 / 100
1 ms212 KiB
#include <bits/stdc++.h> #include "paint.h" using namespace std; const int maxn = 102; vector <vector <int> > v[maxn]; int dp[maxn][maxn]; // dp[i][j] -> if you can finish i-th partition on the position j int l[maxn]; int r[maxn]; int icl[maxn]; string solve_puzzle(string s, vector<int> c) { int n = s.size(); int k = c.size(); string rs = s; auto safe = [&] (int x, int p) { if (x - p + 1 < 0) return 0; for (int i = x; i >= x - p + 1; i--) { if (s[i] == '_') return 0; } return 1; }; for (int i = 0; i < n; i++){ dp[0][i] = safe(i, c[0]); } for (int i = 1; i < k; i++){ for (int j = c[i] + 1; j < n; j++){ dp[i][j] = (dp[i-1][j - c[i] - 1] | dp[i][j-1]) & safe(j, c[i]); } } for (int i = k - 1; i > 0; i--){ for (int j = 0; j < n; j++){ if (dp[i][j] && (j == n-1 || !dp[i][j + 1])) { for (int l = j; l >= max(j - c[i], 0); l--) { dp[i-1][l] = 0; } } } } for (int i = 0; i < k; i++){ int parts = 0; l[i] = r[i] = -1; for (int j = 0; j < n; j++){ if (dp[i][j]) { if (j == 0 || !dp[i][j-1]) parts++; if (l[i] == -1) l[i] = j; r[i] = j; for (int l = j - c[i] + 1; l <= j; l++){ icl[l] = 1; rs[l] = '?'; } } } if (parts == 1) { // cout << i << " " << l[i] << " " << r[i] << "\n"; // l[i] - c[i] + 1, r[i] reunion // r[i] - c[i] + 1, l[i] intersection for (int j = r[i] - c[i] + 1; j <= l[i]; j++) { rs[j] = 'X'; } } } for (int i = 0; i < n; i++){ if (rs[i] == '.') rs[i] = '_'; } // for (int i = 0; i < k; i++){ // for (int j = 0; j < n; j++){ // cout << dp[i][j]; // } // cout << "\n"; // } return rs; } // string solve_puzzle(string s, vector<int> c) { // int n = s.size(); // int k = c.size(); // string rs = s; // auto find = [&] (int ps, int k, bool rev) { // int sf = 0; // if (rev) { // for (int i = ps; i >= 0; i--){ // if (s[i] == '.') sf++; // else sf = 0; // if (sf == k) return i + sf - 1; // } // return -1; // } // for (int i = ps; i < n; i++){ // if (s[i] == '.') sf++; // else sf = 0; // if (sf == k) return i; // } // return -1; // }; // for (int i = 0; i < k; i++) l[i] = 1e9, r[i] = -1; // l[0] = find(0, c[0], 0); // for (int i = 1; i < k; i++){ // l[i] = find(l[i-1] + 2, c[i], 0); // } // r[k-1] = find(n-1, c[k-1], 1); // for (int i = k - 2; i >= 0; i--){ // r[i] = find(r[i + 1] - c[i + 1] - 1, c[i], 1); // } // for (int i = 0; i < k; i++){ // // l[i] - c[i] + 1, r[i] reunion // // r[i] - c[i] + 1, l[i] intersection // for (int j = r[i] - c[i] + 1; j <= l[i]; j++) { // rs[j] = 'X'; // } // } // vector <int> ps; // for (int i = 0; i < n; i++){ // if (s[i] == '_') ps.push_back(i); // } // for (int i = 0; i < ps.size() - 1; i++){ // } // for (int i = 0; i < n; i++){ // if (i - 1 >= 0 && i + 1 < n && rs[i-1] == 'X' && rs[i + 1] == 'X' && rs[i] == '.') rs[i] = '_'; // else if (rs[i] == '.') rs[i] = '?'; // } // return rs; // }
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