Compilare: main.cpp: In function 'int main()': main.cpp:203:51: warning: array subscript has type 'char' [-Wchar-subscripts] 203 | ans = ans + 1LL * fib[v[i][j].first]; | ~~~~~~~~^~~~~ main.cpp:213:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 213 | for(int i = 0; i<w.size() - 1; i++) | ~^~~~~~~~~~~~~ main.cpp:215:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 215 | if(w[i].second == 1 && i < w.size() - 2) | ~~^~~~~~~~~~~~~~ main.cpp:231:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 231 | for(int i = 0; i<w.size() - 1; i++) | ~^~~~~~~~~~~~~ main.cpp:233:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 233 | if(w[i].second == 1 && i < w.size() - 2) | ~~^~~~~~~~~~~~~~ main.cpp:263:55: warning: array subscript has type 'char' [-Wchar-subscripts] 263 | ans = ans + 1LL * fib[v[i][j].first]; | ~~~~~~~~^~~~~ main.cpp: In function 'int cauta_st(int)': main.cpp:35:12: warning: 'ans' may be used uninitialized [-Wmaybe-uninitialized] 35 | return ans; | ^~~ main.cpp:18:9: note: 'ans' was declared here 18 | int ans, mij; | ^~~ main.cpp: In function 'int cauta_dr(int)': main.cpp:59:12: warning: 'ans' may be used uninitialized [-Wmaybe-uninitialized] 59 | return ans; | ^~~ main.cpp:42:9: note: 'ans' was declared here 42 | int ans, mij; | ^~~ main.cpp: In function 'int main()': main.cpp:115:24: warning: 'ans' may be used uninitialized [-Wmaybe-uninitialized] 115 | f2 = cauta_dr(x); | ~~~^~~~~~~~~~~~~ main.cpp:42:9: note: 'ans' was declared here 42 | int ans, mij; | ^~~ main.cpp:124:35: warning: 'ans' may be used uninitialized [-Wmaybe-uninitialized] 124 | v[i][j].first = f1; | ~~~~~~~~~~~~~~^~~~ main.cpp:18:9: note: 'ans' was declared here 18 | int ans, mij; | ^~~