Compilare: main.cpp: In function 'long long int nr()': main.cpp:15:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(inda<dp[val[add]][b[add]].size() and indb<dp[val[add+1]][b[add+1]].size()) ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:15:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(inda<dp[val[add]][b[add]].size() and indb<dp[val[add+1]][b[add+1]].size()) ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:26:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(inda<dp[val[add]][b[add]].size() and indb<dp[val[add+1]][b[add+1]].size()) ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:26:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(inda<dp[val[add]][b[add]].size() and indb<dp[val[add+1]][b[add+1]].size()) ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:36:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(inda<r[0].size() and indb<r[1].size()) ~~~~^~~~~~~~~~~~ main.cpp:36:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(inda<r[0].size() and indb<r[1].size()) ~~~~^~~~~~~~~~~~