#ifndef UTILS_H_ #define UTILS_H_ #include <chrono> #include <cstdio> #include <iostream> // durationミリ秒のビジーウェイト void busy_wait(int duration) { using namespace std::chrono; auto start = high_resolution_clock::now(); auto stop = start; do { stop = high_resolution_clock::now(); } while ( duration_cast<milliseconds>(stop - start) < milliseconds(duration)); } // めっちゃ遅いかけ算とたし算 template<typename T> inli
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