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https://mirror.codeforces.com/contest/1399/submission/229486965
I am iterating on all edges and storing all possible contribution. Then sorting it and using two pointer. Complexity: O(nlogw.log(nlogw)). It is same as jiangly solution. But I am getting Runtime error. I t already tried looking for index out of bounds and memory limit
while(j >= 0 && cur-e[1][j-1] >= need)