Compilare: main.cpp: In function 'int main()': main.cpp:28:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < queries[1].size(); i++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:46:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < queries[i].size(); j++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp:15:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &n, &m); ^ main.cpp:17:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d", &a[i]); ^ main.cpp:22:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &c, &b); ^