Compilare: user.cpp: In function ‘void solve()’: user.cpp:69:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v.size() && ma < p.size()-1 ; i++) ~~^~~~~~~~~~ user.cpp:69:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < v.size() && ma < p.size()-1 ; i++) ~~~^~~~~~~~~~~~ user.cpp:81:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < sel.size() ; i++) ~~^~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:105:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j < p.size() ; j++) ~~^~~~~~~~~~ user.cpp:88:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("desen.in","r",stdin); ^ user.cpp:89:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("desen.out","w",stdout); ^ user.cpp:93:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&nr); ^ user.cpp:94:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp:101:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp: In function ‘void reset()’: user.cpp:58:10: warning: iteration 1004 invokes undefined behavior [-Waggressive-loop-optimizations] t[i] = i; ~~~~~^~~ user.cpp:56:21: note: within this loop for(int i = 1 ; i <= NMAX ; i++) ~~^~~~~~~