struct node{ int x,y,z; }; bool operator<(node a,node b) { if(a.x!=b.x) return a.x<b.x; if(a.y!=b.y) return a.y<b.y; return a.z<b.z; }
Weight-bearing structure struct operator
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Origin www.cnblogs.com/akioi/p/12200049.html
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