user20230715: ce了 Compile Error 0ms 0KiB foo.cc:2:9: warning: #pragma once in main file 2 | #pragma once | ^~~~ foo.cc:3:30: warning: '-std=c++11' is not an option that controls warnings [-Wpragmas] 3 | #pragma GCC diagnostic error "-std=c++11" | ^~~~~~~~~~~~ foo.cc:26:39: warning: bad option '-fwhole-program' to pragma 'optimize' [-Wpragmas] 26 | #pragma GCC optimize("-fwhole-program") | ^ foo.cc:33:41: warning: bad option '-fstrict-overflow' to pragma 'optimize' [-Wpragmas] 33 | #pragma GCC optimize("-fstrict-overflow") | ^ foo.cc:35:41: warning: bad option '-fcse-skip-blocks' to pragma 'optimize' [-Wpragmas] 35 | #pragma GCC optimize("-fcse-skip-blocks") | ^ foo.cc:49:51: warning: bad option '-funsafe-loop-optimizations' to pragma 'optimize' [-Wpragmas] 49 | #pragma GCC optimize("-funsafe-loop-o

user20230715: 不让考试里面用

scrapy_CL: 哈哈我也刷了一堆物资

优美的大乔: 你用的是小根堆吧，其实可以用大根堆储存负数，就是小根堆了。

STRlighT: 是可以的，只要不为0就可以起到控制判断语句的作用