Compilare: user.cpp: In function ‘void solve(int, int, int, int)’: user.cpp:63:16: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘int main()’: user.cpp:193:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eq.in","r",stdin); ^ user.cpp:194:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("eq.out","w",stdout); ^ user.cpp:196:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:198:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^ user.cpp:201:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &qL[i], &qR[i]); ^ user.cpp: In function ‘void solve(int, int, int, int)’: user.cpp:80:39: warning: array subscript is above array bounds [-Warray-bounds] dp_max[mid][7] = dp_min[mid][7] = 0; ^ user.cpp:80:22: warning: array subscript is above array bounds [-Warray-bounds] dp_max[mid][7] = dp_min[mid][7] = 0; ^ user.cpp:100:47: warning: array subscript is above array bounds [-Warray-bounds] dp_max[i][7] = max(dp_max[i + 1][7], v[i] - dp_min[i][1]); ^ user.cpp:100:24: warning: array subscript is above array bounds [-Warray-bounds] dp_max[i][7] = max(dp_max[i + 1][7], v[i] - dp_min[i][1]); ^ user.cpp:101:47: warning: array subscript is above array bounds [-Warray-bounds] dp_min[i][7] = min(dp_min[i + 1][7], v[i] - dp_max[i][1]); ^ user.cpp:101:24: warning: array subscript is above array bounds [-Warray-bounds] dp_min[i][7] = min(dp_min[i + 1][7], v[i] - dp_max[i][1]); ^ user.cpp:162:42: warning: array subscript is above array bounds [-Warray-bounds] maxi = max(maxi, dp_max[ll][7] + dp_max[rr][1]); ^ user.cpp:168:42: warning: array subscript is above array bounds [-Warray-bounds] mini = min(mini, dp_min[ll][7] + dp_min[rr][1]); ^