Compilare: user.cpp: In function ‘void SolveTestCase()’: user.cpp:81:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < MyElements.size(); i ++ ) { ^ user.cpp:106:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( i < MyElements.size() && Cursor < MyQuerys.size() && MyElements[i + 1].Value >= MyQuerys[Cursor].Answer + k ) ^ user.cpp:106:65: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if( i < MyElements.size() && Cursor < MyQuerys.size() && MyElements[i + 1].Value >= MyQuerys[Cursor].Answer + k ) ^ user.cpp:109:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while( Cursor < MyQuerys.size() && MyElements[i].Value <= MyQuerys[Cursor].Answer + k ) { ^ user.cpp:123:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < MyQuerys.size(); i ++ ) ^ user.cpp:55:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d", &N, &Q ); ^ user.cpp:65:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &Matrix[i][j] ); ^ user.cpp:71:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf( "%d %d %d %d", &X1, &Y1, &X2, &Y2 ); ^ user.cpp: In function ‘int main(int, const char**)’: user.cpp:132:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "matrice2.in" , "r", stdin ); ^ user.cpp:133:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen( "matrice2.out", "w", stdout ); ^