Submission #671738

#TimeUsernameProblemLanguageResultExecution timeMemory
671738birthdaycakeBitaro the Brave (JOI19_ho_t1)C++17
50 / 100
354 ms274432 KiB
#ifndef _GLIBCXX_NO_ASSERT #include <cassert> #endif #include <cctype> #include <cerrno> #include <cfloat> #include <ciso646> #include <climits> #include <clocale> #include <cmath> #include <csetjmp> #include <csignal> #include <cstdarg> #include <cstddef> #include <cstdio> #include <cstdlib> #include <cstring> #include <ctime> #if __cplusplus >= 201103L #include <ccomplex> #include <cfenv> #include <cinttypes> #include <cstdbool> #include <cstdint> #include <ctgmath> #include <cwchar> #include <cwctype> #endif #include <algorithm> #include <bitset> #include <complex> #include <deque> #include <exception> #include <fstream> #include <functional> #include <iomanip> #include <ios> #include <iosfwd> #include <iostream> #include <istream> #include <iterator> #include <limits> #include <list> #include <locale> #include <map> #include <memory> #include <new> #include <numeric> #include <ostream> #include <queue> #include <set> #include <sstream> #include <stack> #include <stdexcept> #include <streambuf> #include <string> #include <typeinfo> #include <utility> #include <valarray> #include <vector> #include <array> #include <atomic> #include <chrono> #include <condition_variable> #include <forward_list> #include <future> #include <initializer_list> #include <mutex> #include <random> #include <ratio> #include <regex> #include <scoped_allocator> #include <system_error> #include <thread> #include <tuple> #include <typeindex> #include <type_traits> #include <unordered_map> #include <unordered_set> #define endl '\n' #define int long long using namespace std; string m[4001]; int cnt1[4001][4001][3],cnt[4001][4001][3]; signed main() { int h,w, ans = 0; cin >> h >> w; for(int i = 0; i < h; i++){ cin >> m[i]; } for(int i = 0; i < h; i++){ for(int j = 0; j < w; j++){ if(j != 0) { cnt1[i][j][1] += cnt1[i][j - 1][1]; cnt1[i][j][2] += cnt1[i][j - 1][2]; } if(m[i][j] == 'I') cnt1[i][j][1]++; else if(m[i][j] == 'O')cnt1[i][j][2]++; } } for(int i = 0; i < w; i++){ for(int j = 0; j < h; j++){ if(j != 0) { cnt[j][i][1] += cnt[j - 1][i][1]; cnt[j][i][2] += cnt[j - 1][i][2]; } if(m[j][i] == 'I') cnt[j][i][1]++; else if(m[j][i] == 'O') cnt[j][i][2]++; } } for(int i = 0; i < h; i++){ for(int j = 0; j < w; j++){ if(m[i][j] == 'J'){ int x = cnt1[i][w - 1][2] - cnt1[i][j][2], y = cnt[h - 1][j][1] - cnt[i][j][1]; ans += (x * y); } } } cout << ans; }
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