Compilare: main.cpp: In function 'void checkone()': main.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int i = 0; i < s1.length(); ++ i) | ~~^~~~~~~~~~~~~ main.cpp:35:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for(int i = 0; i < s2.length(); ++ i) | ~~^~~~~~~~~~~~~ main.cpp:40:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for(int i = 0; i < s3.length(); ++ i) | ~~^~~~~~~~~~~~~ main.cpp: In function 'void dijkstra()': main.cpp:75:26: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)len) + s1.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 75 | pq.push({len + s1.length(), dif + s1.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:75:45: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)dif) + s1.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 75 | pq.push({len + s1.length(), dif + s1.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:76:26: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)len) + s1.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 76 | pq.push({len + s1.length(), dif - s1.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:76:45: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)dif) - s1.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 76 | pq.push({len + s1.length(), dif - s1.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:78:26: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)len) + s2.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 78 | pq.push({len + s2.length(), dif + s2.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:78:45: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)dif) + s2.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 78 | pq.push({len + s2.length(), dif + s2.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:79:26: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)len) + s2.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 79 | pq.push({len + s2.length(), dif - s2.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:79:45: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)dif) - s2.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 79 | pq.push({len + s2.length(), dif - s2.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:81:26: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)len) + s3.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 81 | pq.push({len + s3.length(), dif + s3.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:81:45: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)dif) + s3.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 81 | pq.push({len + s3.length(), dif + s3.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:82:26: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)len) + s3.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 82 | pq.push({len + s3.length(), dif - s3.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:82:45: warning: narrowing conversion of '(((std::__cxx11::basic_string<char>::size_type)dif) - s3.std::__cxx11::basic_string<char>::length())' from 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 82 | pq.push({len + s3.length(), dif - s3.length()}); | ~~~~^~~~~~~~~~~~~ main.cpp:63:9: warning: unused variable 'cnt' [-Wunused-variable] 63 | int cnt = 0; | ^~~