Compilare: main.cpp: In function 'int isomorph(int, int)': main.cpp:86:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < A[a].size(); i++) ~~^~~~~~~~~~~~~ main.cpp:89:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < B[b].size(); i++) ~~^~~~~~~~~~~~~ main.cpp:101:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] DP[a][b] = (match(A[a].size(), B[b].size()) == B[b].size()) ? 1 : -1; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp:84:9: warning: unused variable 'i' [-Wunused-variable] int i = 0, j = 0; ^ main.cpp:84:16: warning: unused variable 'j' [-Wunused-variable] int i = 0, j = 0; ^