Compilare: main.cpp: In function 'int main()': main.cpp:64:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("trenuri.in", "r", stdin); ^ main.cpp:65:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("trenuri.out", "w", stdout); ^ main.cpp:68:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &n, &m, &b); ^ main.cpp:70:69: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &E[i].a, &E[i].b, &E[i].c, &E[i].p, &E[i].s); ^