0_0_23562634_10939.cpp: In function 'void update(int, int, ll, int)':
0_0_23562634_10939.cpp:21:41: error: 'MD' was not declared in this scope
Sum[ty][j][x] = MD(Sum[ty][j][x] + cnt);
^
0_0_23562634_10939.cpp: In function 'll sum(int, int, int)':
0_0_23562634_10939.cpp:28:31: error: 'MD' was not declared in this scope
rtn = MD(rtn + Sum[ty][j][x]);
^
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