Compilare: main.cpp: In function 'int main()': main.cpp:99:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 99 | while (seq1.size() > half) { | ~~~~~~~~~~~~^~~~~~ main.cpp:103:29: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 103 | if (seq2.size() < half) { | ~~~~~~~~~~~~^~~~~~ main.cpp:112:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 112 | while (seq2.size() > half) { | ~~~~~~~~~~~~^~~~~~ main.cpp:116:29: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 116 | if (seq1.size() < half) { | ~~~~~~~~~~~~^~~~~~ main.cpp:125:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 125 | while (seq3.size() > half) { | ~~~~~~~~~~~~^~~~~~ main.cpp:129:29: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 129 | if (seq1.size() < half) { | ~~~~~~~~~~~~^~~~~~ main.cpp:139:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 139 | while (seq1.size() < half) { | ~~~~~~~~~~~~^~~~~~ main.cpp:145:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 145 | while (seq2.size() < half) { | ~~~~~~~~~~~~^~~~~~ main.cpp:151:28: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 151 | while (seq3.size() < half) { | ~~~~~~~~~~~~^~~~~~ main.cpp: At global scope: main.cpp:16:36: warning: 'S3' defined but not used [-Wunused-variable] 16 | static int S1[MAXN+1], S2[MAXN+1], S3[MAXN+1]; | ^~ main.cpp:16:24: warning: 'S2' defined but not used [-Wunused-variable] 16 | static int S1[MAXN+1], S2[MAXN+1], S3[MAXN+1]; | ^~ main.cpp:16:12: warning: 'S1' defined but not used [-Wunused-variable] 16 | static int S1[MAXN+1], S2[MAXN+1], S3[MAXN+1]; | ^~