Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:38:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(int i = 0; i < c.size(); i++){ | ~~^~~~~~~~~~ main.cpp:39:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int j = 0; j < c.size(); j++){ | ~~^~~~~~~~~~ main.cpp:47:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i = 0; i + 1 < c.size(); i++){ | ~~~~~~^~~~~~~~~~ main.cpp:58:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(int j = 0; j <= c.size() - i; j++){ | ~~^~~~~~~~~~~~~~~ main.cpp:64:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for(int i = 0; i < c.size(); i++){ | ~~^~~~~~~~~~ main.cpp:67:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 67 | if(i + 1 < c.size()) dp[nod][0] = max(dp[nod][0], dp1[i][x] + dp2[i + 1][x]); | ~~~~~~^~~~~~~~~~ main.cpp:70:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 70 | if(i > 0 && i + 1 < c.size()) val += dp1[i - 1][x] + dp2[i + 1][x]; | ~~~~~~^~~~~~~~~~