Compilare: main.cpp: In function 'int main()': main.cpp:54:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0;k<v[i].size();k++) ~^~~~~~~~~~~~ main.cpp:55:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<v[i-1].size();j++) ~^~~~~~~~~~~~~~ main.cpp:61:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<v[i].size();j++) ~^~~~~~~~~~~~ main.cpp:63:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0;k<v[i+1].size();k++) ~^~~~~~~~~~~~~~ main.cpp:74:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<v[i].size();j++) ~^~~~~~~~~~~~ main.cpp:76:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k=0;k<v[i+1].size();k++) ~^~~~~~~~~~~~~~ main.cpp:33:33: warning: 'idx' may be used uninitialized in this function [-Wmaybe-uninitialized] int st=0,dr=lgmax,mij=0,idx; ^~~