Compilare: main.cpp: In function 'int main()': main.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i < s.size(); i++) ~~^~~~~~~~~~ main.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (pi[i] == s1.size()) ~~~~~~^~~~~~~~~~~~ main.cpp:11:9: warning: unused variable 'n' [-Wunused-variable] int n, m, i, cnt = 0; ^ main.cpp:11:12: warning: unused variable 'm' [-Wunused-variable] int n, m, i, cnt = 0; ^