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//11584687 NKHelloWorld 3067 Accepted 2764K 485MS C++ 1186B 2013-05-11 14:37:10 //這道題可能存在重邊,K可能很大,需要longlong才能過 #include <cstdio> #include <cstring> #include <algorithm> using namespace std; typedef long long ll; int n,m,k; ll tree[1100]; struct NODE { int x,y; }node[1000*1000]; bool cmp(NODE n1,NODE n2) { if(n1.x == n2.x) { return n1.y < n2.y; } return n1.x < n2.x; } ll sum(int pos) { ll ret = 0; while(pos > 0) { ret += tree[pos]; pos -= (pos & -pos); } return ret; } void BITinsert(int pos ,int val) { while(pos <= 1000) { tree[pos] += val; pos += (pos & -pos); } } int main() { int T; scanf("%d",&T); for(int TT = 1; TT<=T;TT++) { memset(tree,0,sizeof(tree)); scanf("%d%d%d",&n,&m,&k); for(int i=0;i<k;i++) { scanf("%d%d",&node[i].x,&node[i].y); } sort(node,node+k,cmp); ll ans = 0; for(int i=k-1;i>=0;i--) { if(node[i].y != 1) { ans += sum(node[i].y-1); } BITinsert(node[i].y,1); } printf("Test case %d: %lld\n",TT,ans); } return 0; }