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class Solution {
public:
    int twoCitySchedCost(vector<vector<int>>& cost) {
        int n=cost.size();
        vector <int> dp(n+1,1e8);
        dp[0]=0;
        for (int i=0;i<n;i++)
        {
            for (int j=n;j>=1;j--)
            {
                dp[j]=min(dp[j-1]+cost[i][0],dp[j]+cost[i][1]);
            }
            dp[0]=dp[0]+cost[i][1];
        }
        return dp[n/2];
    }
};

prog.cpp:3:26: error: ‘vector’ has not been declared
     int twoCitySchedCost(vector<vector<int>>& cost) {
                          ^~~~~~
prog.cpp:3:32: error: expected ‘,’ or ‘...’ before ‘<’ token
     int twoCitySchedCost(vector<vector<int>>& cost) {
                                ^
prog.cpp: In member function ‘int Solution::twoCitySchedCost(int)’:
prog.cpp:4:15: error: ‘cost’ was not declared in this scope
         int n=cost.size();
               ^~~~
prog.cpp:5:9: error: ‘vector’ was not declared in this scope
         vector <int> dp(n+1,1e8);
         ^~~~~~
prog.cpp:5:17: error: expected primary-expression before ‘int’
         vector <int> dp(n+1,1e8);
                 ^~~
prog.cpp:6:9: error: ‘dp’ was not declared in this scope
         dp[0]=0;
         ^~
prog.cpp:11:23: error: ‘min’ was not declared in this scope
                 dp[j]=min(dp[j-1]+cost[i][0],dp[j]+cost[i][1]);
                       ^~~

Standard output is empty