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// Buffered reader {{{ namespace IO { const int BUFSIZE = 1<<14; char buf[BUFSIZE + 1], *inp = buf; bool reacheof; char get_char() { if (!*inp && !reacheof) { memset(buf, 0, sizeof buf); int tmp = fread(buf, 1, BUFSIZE, stdin); if (tmp != BUFSIZE) reacheof = true; inp = buf; } return *inp++; } template<typename T> T get() { int neg = 0; T res = 0; char c = get_char(); while (!std::isdigit(c) && c != '-' && c != '+') c = get_char(); if (c == '+') { neg = 0; } else if (c == '-') { neg = 1; } else res = c - '0'; c = get_char(); while (std::isdigit(c)) { res = res * 10 + (c - '0'); c = get_char(); } return neg ? -res : res; } }; // Helper methods int ri() { return IO::get<int>(); } // }}}
#line 1 "buffered_reader.h" // Buffered reader {{{ namespace IO { const int BUFSIZE = 1<<14; char buf[BUFSIZE + 1], *inp = buf; bool reacheof; char get_char() { if (!*inp && !reacheof) { memset(buf, 0, sizeof buf); int tmp = fread(buf, 1, BUFSIZE, stdin); if (tmp != BUFSIZE) reacheof = true; inp = buf; } return *inp++; } template<typename T> T get() { int neg = 0; T res = 0; char c = get_char(); while (!std::isdigit(c) && c != '-' && c != '+') c = get_char(); if (c == '+') { neg = 0; } else if (c == '-') { neg = 1; } else res = c - '0'; c = get_char(); while (std::isdigit(c)) { res = res * 10 + (c - '0'); c = get_char(); } return neg ? -res : res; } }; // Helper methods int ri() { return IO::get<int>(); } // }}}