Compilare: user.cpp: In function ‘int main()’: user.cpp:34:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("tribute.in", "r", stdin); ^ user.cpp:35:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("tribute.out", "w", stdout); ^ user.cpp:40:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d", &n, &dx, &dy); ^ user.cpp:43:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &px, &py); ^ user.cpp: In function ‘long long int functie()’: user.cpp:17:41: warning: iteration 50001 invokes undefined behavior [-Waggressive-loop-optimizations] sumst[i] = sumst[i - 1] + nrst[i]; ~~~~~~^ user.cpp:16:19: note: within this loop for (i = 1; i <= NMAX; i++) ~~^~~~~~~ user.cpp:15:17: warning: iteration 50001 invokes undefined behavior [-Waggressive-loop-optimizations] nrst[i] = nrst[i - 1] + vx[i - 1]; ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ user.cpp:14:19: note: within this loop for (i = 1; i <= NMAX; i++) ~~^~~~~~~ user.cpp: In function ‘int main()’: user.cpp:50:49: warning: iteration 50002 invokes undefined behavior [-Waggressive-loop-optimizations] nrst[i] = sumst[i] = sumdr[i] = nrdr[i] = vx[i] = 0; ~~~~~~~~^~~~~~~~~~~ user.cpp:49:19: note: within this loop for (i = 0; i <= NMAX; i++) { ~~^~~~~~~