Compilare: main.cpp: In function 'void djikstra(int)': main.cpp:51:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(int i=0; i < v[nodcurent].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:108:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 108 | if(a[i-1][j] != -1) | ^ main.cpp:126:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 126 | if(a[i+1][j] != -1) | ^ main.cpp:149:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 149 | if(a[i][j-1] != -1) | ^ main.cpp:169:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else] 169 | if(a[i][j+1] != -1) | ^