Compilare: main.cpp: In function 'void join(std::pair<int, int>, std::pair<int, int>)': main.cpp:44:22: warning: variable 'poz1' set but not used [-Wunused-but-set-variable] 44 | pair <int, int > poz1 = x; | ^~~~ main.cpp: In function 'void afis_grupe()': main.cpp:91:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for ( k = 0; k < a[{i, j}].size(); ++k ) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:76:17: warning: unused variable 'l' [-Wunused-variable] 76 | int i, j, k,l; | ^ main.cpp: In function 'int main()': main.cpp:133:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<ura>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 133 | for ( i = 0; i < v.size(); ++i ) | ~~^~~~~~~~~~ main.cpp:137:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<ura>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 137 | while ( j < v.size() && v[j].val >= v[i].val - d ) | ~~^~~~~~~~~~ main.cpp:148:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<ura>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 148 | while ( ind < v.size() && v[ind].val == v[i].val ) | ~~~~^~~~~~~~~~ main.cpp:161:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<ura>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 161 | while ( ind < v.size() && v[ind].val == v[i].val ) | ~~~~^~~~~~~~~~ main.cpp:171:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<ura>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 171 | while ( j < v.size() && v[j].val >= v[i].val - d ) | ~~^~~~~~~~~~