Compilare: main.cpp: In function 'int main()': main.cpp:85:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < v.size() ; i ++) ~~^~~~~~~~~~ main.cpp:73:21: warning: unused variable 'cnt' [-Wunused-variable] int i , j , c , cnt , s; ^~~ main.cpp:71:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("oracol.in" , "r" , stdin); ^ main.cpp:72:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("oracol.out" , "w" , stdout); ^ main.cpp:74:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &n); ^ main.cpp:78:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d" , &c); ^