Compilare: main.cpp: In function 'void solve1()': main.cpp:24:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fs(f, "%d%d", &n, &m); ^ main.cpp:25:20: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fs(f, "%d", &k); ^ main.cpp:28:66: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fs(f, "%d%d%d%d", &v[i].x1, &v[i].y1, &v[i].x2, &v[i].y2); ^ main.cpp: In function 'void solve2()': main.cpp:62:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fs(f, "%d%d", &n, &m); ^ main.cpp:63:20: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fs(f, "%d", &k); ^ main.cpp:66:46: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fs(f, "%d%d%d%d", &x1, &y1, &x2, &y2); ^ main.cpp: In function 'int main()': main.cpp:90:20: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fs(f, "%d", &p); ^ main.cpp: In function 'void solve1()': main.cpp:35:9: warning: 'imax' may be used uninitialized in this function [-Wmaybe-uninitialized] if(i == imax) continue; ^~