제출 #146339

#제출 시각아이디문제언어결과실행 시간메모리
146339popovicirobertLanguages (IOI10_languages)C++14
0 / 100
10 ms1792 KiB
#include <bits/stdc++.h> #define ll long long #define ull unsigned long long using namespace std; #include "grader.h" #include "lang.h" #define SZ 100 const int B = (int) 1e9 + 7; unordered_map <ull, int> mp[60]; bool ok[60][66000]; bool vis[60]; inline ll myrand() { return (1LL * rand() << 15) + rand(); } void excerpt(int *E) { int i, j; vector < vector <int> > arr(56, vector <int>(5)); int id = -1; for(int len = 4; len >= 1 && id == -1; len--) { ull cur = 0, pw = 1; for(i = 1; i < len; i++) { pw *= B; } for(i = 0; i + len <= 100 && id == -1; i++) { cur = cur * B + E[i]; if(i >= len - 1) { for(int j = 0; j < 56; j++) { arr[j][len] += mp[j][cur]; } cur -= pw * E[i - len + 1]; } } } vector <int> ord(56); iota(ord.begin(), ord.end(), 0); sort(ord.begin(), ord.end(), [&](const int &x, const int &y) { for(int i = 4; i >= 0; i--) { if(arr[x][i] < arr[y][i]) { return 1; } if(arr[x][i] > arr[y][i]) { return 0; } } return 1; }); if(id == -1) { unordered_map <int, int> aux; for(i = 0; i < 100; i++) { aux[E[i]] = 1; } int mx = 0; for(i = 0; i < 56; i++) { int cur = 0; for(auto it : aux) { cur += ok[i][it.first]; } if(cur > mx) { mx = cur, id = i; } } if(id == -1) { vector <int> ids; for(i = 0; i < 56; i++) { if(vis[i] == 0) ids.push_back(i); } int sz = ids.size(); id = ids[myrand() % sz]; } } id = language(id); for(i = 0; i < 100; i++) { ull cur = 0; for(j = i; j < i + 4 && j < 100; j++) { cur = cur * B + E[j]; mp[id][cur]++; } ok[id][E[i]] = 1; } vis[id] = 1; }
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