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vector<int> fenwick(4 * N), fenwickCount(4 * N);
 
	auto update = [&](int x) {
		int v = x;
		for(x = mp[x]; x < (N << 2) ; x += x & -x) fenwick[x] += v;
		for(x = mp[v] ; x < (N << 2) ; x += x & -x) fenwickCount[x] ++;
	};
 
	auto query = [&](int topK) {
		int res = 0,tot = 0, sum = 0;
		for(int lg = (1 << 20) ; lg ; lg >>= 1) {
			if(res + lg < (N << 2) and tot + fenwickCount[res ^ lg] <= topK) {
				res ^= lg;
				tot += fenwickCount[res];
				sum += fenwick[res];
			}
		}
		return sum;
 
	};

prog.cpp:1:1: error: ‘vector’ does not name a type
 vector<int> fenwick(4 * N), fenwickCount(4 * N);
 ^~~~~~
prog.cpp: In lambda function:
prog.cpp:5:11: error: ‘mp’ was not declared in this scope
   for(x = mp[x]; x < (N << 2) ; x += x & -x) fenwick[x] += v;
           ^~
prog.cpp:5:23: error: ‘N’ was not declared in this scope
   for(x = mp[x]; x < (N << 2) ; x += x & -x) fenwick[x] += v;
                       ^
prog.cpp:5:46: error: ‘fenwick’ was not declared in this scope
   for(x = mp[x]; x < (N << 2) ; x += x & -x) fenwick[x] += v;
                                              ^~~~~~~
prog.cpp:6:11: error: ‘mp’ was not declared in this scope
   for(x = mp[v] ; x < (N << 2) ; x += x & -x) fenwickCount[x] ++;
           ^~
prog.cpp:6:24: error: ‘N’ was not declared in this scope
   for(x = mp[v] ; x < (N << 2) ; x += x & -x) fenwickCount[x] ++;
                        ^
prog.cpp:6:47: error: ‘fenwickCount’ was not declared in this scope
   for(x = mp[v] ; x < (N << 2) ; x += x & -x) fenwickCount[x] ++;
                                               ^~~~~~~~~~~~
prog.cpp: In lambda function:
prog.cpp:12:19: error: ‘N’ was not declared in this scope
    if(res + lg < (N << 2) and tot + fenwickCount[res ^ lg] <= topK) {
                   ^
prog.cpp:12:37: error: ‘fenwickCount’ was not declared in this scope
    if(res + lg < (N << 2) and tot + fenwickCount[res ^ lg] <= topK) {
                                     ^~~~~~~~~~~~
prog.cpp:15:12: error: ‘fenwick’ was not declared in this scope
     sum += fenwick[res];
            ^~~~~~~

Standard output is empty