Borderou de evaluare (job #684846)

Compilare: main.cpp: In function 'int main()': main.cpp:56:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'unsigned int'} [-Wsign-compare] 56 | for (j=0;j<s.length();j++) | ~^~~~~~~~~~~ main.cpp:76:8: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 76 | if (a[i][j]>0) if (a[i+1][j]<=0) contur++; | ^