Compilare: main.cpp: In constructor 'mmove::mmove(bool, int, int)': main.cpp:94:8: warning: 'mmove::tip' will be initialized after [-Wreorder] bool tip; ^~~ main.cpp:93:7: warning: 'int mmove::a' [-Wreorder] int a, b; ^ main.cpp:96:3: warning: when initialized here [-Wreorder] mmove(bool _tip = false, int _a = 0, int _b = 0) : tip(_tip), a(_a), b(_b) {} ^~~~~ main.cpp: In function 'void solve_lines()': main.cpp:117:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(a[i][1] == (i + match) % 2) ^ main.cpp:123:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v0.size(); i++) ~~^~~~~~~~~~~ main.cpp: In function 'void solve_cols()': main.cpp:144:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(a[1][j] == (j + match) % 2) ^ main.cpp:150:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v0.size(); i++) ~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:183:36: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<mmove>::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n", moves.size()); ^ main.cpp:185:36: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<mmove>::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n", moves.size()); ^ main.cpp:186:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < moves.size(); i++) { ~~^~~~~~~~~~~~~~ main.cpp:161:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &p, &t); ^ main.cpp:164:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &n); ^ main.cpp:166:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s); ^ main.cpp: In function 'bool check_lc()': main.cpp:42:37: warning: 'first_c1' may be used uninitialized in this function [-Wmaybe-uninitialized] int first_l0, first_l1, first_c0, first_c1; ^~~~~~~~ main.cpp:42:27: warning: 'first_c0' may be used uninitialized in this function [-Wmaybe-uninitialized] int first_l0, first_l1, first_c0, first_c1; ^~~~~~~~