">using namespace std; struct xk{ int a,b; }; bool cmp(xk &x,xk &y) { return x.b<y.b; } int main() { int n,r,avg; while(cin>>n>>r>>avg) { vector<xk> v; int sumying=avg*n,sumxian=0,cha; for(int i=0;i<n;i++) {xk t;cin>>t.a>>t.b;v.push_back(t);} sort(v....
