Compilare: user.cpp: In function ‘bool sim(int)’: user.cpp:29:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i<=n; i++) ^ user.cpp:31:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j<=m && nr>=livada[i][j].val; j++) ^ user.cpp:31:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 1; j<=m && nr>=livada[i][j].val; j++) ^ user.cpp:38:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i<=r; i++) ^ user.cpp: In function ‘void rez()’: user.cpp:50:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i<=m; i++) ^ user.cpp:54:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i<=n; i++) ^ user.cpp:58:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i<=n; i++) ^ user.cpp:60:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 2; j<=m; j++) ^ user.cpp:49:79: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d\n%d %d %d %d %d\n", &n, &m, &c, &r, &x, &y, &z, &w, &u); ^ user.cpp:52:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld ", &livada[1][i].val); ^ user.cpp:56:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld ", &livada[i][1].val); ^ user.cpp: In function ‘int main()’: user.cpp:77:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("livada3.in", "r", stdin); ^ user.cpp:78:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("livada3.out", "w", stdout); ^