Accepted
/in/foo.cc: In function 'int Dp()':
/in/foo.cc:41:13: warning: operation on 'g[(i % 2)][j]' may be undefined [-Wsequence-point]
g[i%2][j]=g[i%2][j]=i; //记录当前位置
~~~~~~~~~^~~~~~~~~~~~
/in/foo.cc: In function 'int Dp()':
/in/foo.cc:41:13: warning: operation on 'g[(i % 2)][j]' may be undefined [-Wsequence-point]
g[i%2][j]=g[i%2][j]=i; //记录当前位置
~~~~~~~~~^~~~~~~~~~~~
