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class Solution {
public:
    vector<vector<long long>> splitPainting(vector<vector<int>>& segments) {
        map<int, long long> m;
        for(int i = 0; i < segments.size(); i++){
            m[segments[i][0]] += segments[i][2];
            m[segments[i][1]] -= segments[i][2];
        }

        vector<vector<long long>> res;
        int curr = 0;
        for(auto it: m){
           if(m[curr] > 0){
               res.push_back({curr, it.first, m[curr]});
           }
            m[it.first] += m[curr];
            curr = it.first;
        }
        
        return res;
    }
};