Speed

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The imposter is practising hard to increase his speed so he decided to run for $T$ seconds. The first speed gets unlocked at $0^{th}$ $second$ $( t_{i} = 0 sec )$ and is valid upto time $T$ $( t_{f} = T sec ).$ For the next $N - 1$ speed, you are given $S$, $t_{i}$ and $t_{f}$ where $t_{i}$ denotes the time at which speed $S$ gets unlocked and $t_{f}$ denotes that speed $S$ is valid for

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solution.cppC++17

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