Compilare: user.cpp: In function ‘void Read()’: user.cpp:15:9: warning: unused variable ‘cnt’ [-Wunused-variable] int cnt = 0; ^ user.cpp: In function ‘void Solve1(int)’: user.cpp:36:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v[x].size(); i++) ^ user.cpp:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = i; j < v[x].size(); j++) ^ user.cpp:44:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j == (v[x].size() - 1)) zdr = N - v[x][j]; ^ user.cpp:31:13: warning: unused variable ‘CC’ [-Wunused-variable] int i,j,CC,cate = 0; ^ user.cpp:31:16: warning: unused variable ‘cate’ [-Wunused-variable] int i,j,CC,cate = 0; ^ user.cpp:34:13: warning: unused variable ‘nrz’ [-Wunused-variable] int nru,nrz,dif,lg,cnt; ^ user.cpp:35:19: warning: unused variable ‘G1’ [-Wunused-variable] int zst, zdr ,G1,G2; ^ user.cpp:35:22: warning: unused variable ‘G2’ [-Wunused-variable] int zst, zdr ,G1,G2; ^ user.cpp: In function ‘int main()’: user.cpp:90:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[i].size() <= mlc) Solve1(i); ^