Problems from Nordic Collegiate Programming Contest (NCPC) 2021

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Antenna Analysis0.02100143041629%5.7Harden
Breaking Bars0.011868481378%9.5Harden
Customs Controls0.0249877819425%5.3Mediumen
Deceptive Directions0.03681121528824%6.2Harden
Eavesdropper Evasion0.277623368626%7.9Harden
Fortune From Folly0.0059137415441%5.1Mediumen
Grazed Grains0.00114125365052%3.0Mediumen
Hiring Help0.12228055510419%8.4Harden
Intact Intervals0.325265409217%5.9Harden
Joint Jog Jam0.00561611104265%1.7Easyen
Knot Knowledge0.00135150309060%1.5Easyen
Locust Locus0.0046173687550%2.1Easyen
Marvelous Marathon1.00373241512%8.4Harden