Compilare: user.cpp: In function ‘int main()’: user.cpp:10:34: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] scanf("%d%d%llf",&i,&o,&k),g[i][w[i]++]=o,c[i][o]=log(k); ^ user.cpp:23:27: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] printf("%.4llf",exp(y)); ^ user.cpp:8:24: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:8:24: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:10:65: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%llf",&i,&o,&k),g[i][w[i]++]=o,c[i][o]=log(k); ^