Better "sensitive to time limit" text

[Matistjati]

When I get
WARNING PAC submission line_st.py (Python 3 w/Pypy) sensitive to time limit: limit of 5.833333333333334 secs -> WA, limit of 14.0 secs -> AC
it would be super useful to know how long it it took (there's a big difference between it taking 7 seconds and 13).

There seems to be some attempt at this, but it isn't sufficient

   PAC submission naive_nq_fast_delete.py (Python 3 w/Pypy) OK: AC (25) [testcase: testcase secret/g7full/053-g4-1, CPU: 28.00s @ testcase secret/g4line/053-g4-1]
WARNING PAC submission naive_nq_slow_delete.cpp (C++) sensitive to time limit: limit of 5.833333333333334 secs -> AC (19) [testcase: testcase secret/g7full/037-g3-1, CPU: 11.50s @ testcase secret/g3low_d/037-g3-1], limit of 14.0 secs -> AC (25) [testcase: testcase secret/g7full/055-g4-3, CPU: 28.00s @ testcase secret/g4line/055-g4-3]