[(0,1),(1,2),(0,3),(2,4),(1,4),(2,5),(3,6),(4,7),(6,7),(7,8),(5,8),(3,9),(6,10),(9,11),(10,12),(5,12),(9,13),(11,14),(14,15),(14,16),(13,17),(10,18),(18,19),(13,19),(8,20),(18,21),(16,22),(16,23),(11,24),(21,25),(22,26),(20,26),(19,27),(22,28),(21,29),(26,30),(25,31),(24,32),(28,33),(20,34),(24,35),(31,36),(30,37),(33,37),(34,38),(17,39),(15,39),(38,40),(36,41),(39,41),(17,42),(34,43),(43,44),(27,44),(42,45),(31,46),(35,47),(46,48),(47,49),(12,50),(35,51),(25,52),(32,53),(37,54),(40,54),(49,55),(23,55),(38,56),(42,56),(29,57),(30,58),(50,58),(57,59),(46,60),(48,61),(57,62),(27,63),(52,64),(43,64),(60,65),(47,66),(65,66),(51,67),(54,67),(62,68),(68,69),(23,70),(45,71),(32,72),(63,73),(59,74),(64,75),(70,76),(74,77),(72,77),(53,78),(76,79),(44,79),(67,80),(73,81),(65,82),(60,83),(72,84),(84,85),(81,86),(55,87),(85,87),(48,88),(70,88),(83,89),(71,90),(87,90),(86,91),(75,92),(81,93),(78,93),(51,94),(71,94),(93,95),(90,96),(63,97),(95,98),(96,99),(56,99),(82,100),(98,101),(66,102),(98,103),(79,104),(89,104),(78,105),(101,106),(74,106),(88,107),(36,107),(33,108),(52,109),(101,109),(84,110),(91,111),(58,111),(110,112),(62,113),(95,113),(61,114),(15,115),(111,115),(76,116),(41,117),(100,118),(80,118),(115,119),(105,119),(94,120),(61,120),(86,121),(92,122),(45,122),(97,123),(29,123),(112,124),(69,125),(108,126),(125,127),(69,128),(109,128),(53,129),(50,130),(113,130),(127,131),(119,132),(75,133),(89,134),(129,135),(120,136),(99,137),(107,138),(117,139),(137,140),(117,140),(140,141),(131,142),(125,143),(116,144),(137,144),(141,145),(105,146),(112,147),(143,148),(49,149),(104,149),(142,150),(144,151),(138,152),(151,152),(134,153),(106,154),(102,155),(126,156),(134,157),(91,158),(128,158),(152,159),(156,160),(122,161),(135,162),(110,162),(145,163),(151,164),(160,165),(165,166),(126,167),(108,168),(159,169),(121,170),(163,171),(68,171),(92,172),(28,173),(157,173),(136,174),(170,175),(173,176),(147,177),(168,178),(132,179),(59,180),(135,180),(123,181),(175,182),(155,183),(153,183),(96,184),(82,185),(183,186),(143,187),(172,188),(127,189),(103,190),(170,191),(132,192),(146,193),(100,194),(147,195),(114,196),(166,197),(179,198),(40,198),(184,199),(114,200),(102,201),(136,202),(189,203),(168,204),(189,205),(184,206),(178,207),(197,208),(176,209),(133,210),(178,211),(142,212),(190,213),(97,214),(192,215),(197,216),(174,217),(149,218),(83,219),(103,220),(169,221),(191,222),(172,223),(131,224),(187,225),(146,226),(118,227),(138,228),(182,229),(187,230),(157,231),(188,232),(194,233),(190,234),(129,235),(165,236),(116,237),(141,238),(154,239),(121,240),(186,241),(182,242),(177,243),(164,244),(193,245),(167,246),(159,247),(153,248),(195,249),(164,250),(196,251),(171,252),(174,253),(177,254),(155,255),(185,256),(161,257),(181,258),(180,259),(73,260),(158,261),(179,262),(169,263),(188,264),(161,265),(145,266),(80,267),(150,268),(186,269),(196,270),(175,271),(185,272),(198,273),(194,274),(154,275),(195,276),(156,277),(150,278),(181,279),(176,280),(133,281),(162,282),(130,283),(160,284),(163,285),(77,286),(139,287),(85,288),(193,289),(192,290),(139,291),(148,292),(191,293),(124,294),(166,295),(167,296),(124,297),(148,298)]
[(0,1),(0,2),(1,3),(2,4),(4,5),(5,6),(6,7),(1,8),(2,9),(7,10),(9,10),(7,11),(9,12),(8,13),(10,14),(12,15),(13,16),(16,17),(17,18),(4,19),(11,20),(6,21),(13,22),(21,23),(3,24),(17,25),(23,25),(14,26),(18,26),(22,27),(16,28),(12,29),(27,29),(24,30),(8,31),(15,31),(30,32),(28,33),(20,34),(30,35),(24,35),(34,36),(28,37),(14,38),(37,38),(36,39),(18,40),(39,40),(31,41),(20,42),(27,43),(43,44),(41,45),(35,46),(37,47),(44,48),(46,49),(47,50),(48,51),(49,51),(25,52),(11,53),(48,54),(32,55),(32,56),(43,57),(55,58),(53,58),(21,59),(50,60),(60,61),(49,62),(41,63),(33,64),(57,64),(51,65),(59,65),(54,66),(66,67),(44,67),(54,68),(33,69),(68,70),(45,71),(64,72),(19,73),(23,73),(70,74),(36,75),(65,76),(62,77),(39,78),(74,78),(52,79),(56,80),(76,81),(75,82),(56,82),(3,83),(40,84),(78,85),(50,86),(68,87),(82,88),(38,88),(86,89),(22,89),(42,90),(70,91),(57,92),(62,93),(75,94),(89,94),(69,95),(85,96),(87,96),(92,97),(80,98),(69,99),(45,99),(97,100),(93,101),(77,102),(96,102),(77,103),(80,103),(81,104),(61,105),(26,106),(52,106),(105,107),(93,108),(99,109),(94,110),(104,111),(66,112),(97,113),(73,114),(76,114),(71,115),(42,115),(108,116),(19,117),(91,117),(116,118),(72,119),(90,120),(109,120),(83,121),(119,122),(122,123),(88,123),(118,124),(34,125),(91,126),(90,127),(124,128),(118,129),(125,130),(71,130),(127,131),(105,131),(83,132),(125,133),(63,134),(133,134),(100,135),(122,135),(129,136),(55,137),(127,137),(116,138),(110,138),(29,139),(60,139),(84,140),(61,141),(107,142),(131,143),(121,143),(126,144),(144,145),(143,145),(15,146),(128,147),(58,148),(117,149),(123,150),(128,150),(102,151),(101,151),(113,152),(111,153),(149,153),(134,154),(115,154),(132,155),(63,156),(124,157),(129,158),(107,159),(132,160),(109,161),(98,161),(157,162),(148,163),(85,164),(147,164),(164,165),(158,166),(156,167),(163,168),(135,169),(136,170),(165,170),(166,171),(162,172),(162,173),(112,174),(120,175),(175,176),(146,177),(126,178),(110,179),(155,180),(154,181),(95,182),(169,183),(140,184),(100,184),(108,185),(163,186),(178,187),(95,188),(47,188),(142,189),(136,190),(137,190),(84,191),(146,192),(87,192),(189,193),(168,194),(79,195),(177,196),(159,197),(130,197),(103,198),(160,199),(157,200),(104,201),(183,202),(59,203),(194,204),(179,205),(121,206),(183,207),(167,208),(46,209),(139,210),(152,211),(192,212),(180,213),(193,214),(195,215),(153,216),(86,217),(174,218),(145,219),(152,220),(174,221),(159,222),(142,223),(185,224),(74,225),(151,226),(191,227),(166,228),(186,229),(101,230),(72,231),(186,232),(81,233),(187,234),(196,235),(179,236),(114,237),(170,238),(148,239),(196,240),(172,241),(165,242),(155,243),(198,244),(190,245),(92,246),(150,247),(171,248),(168,249),(182,250),(193,251),(175,252),(160,253),(98,254),(141,255),(194,256),(185,257),(111,258),(113,259),(156,260),(181,261),(191,262),(106,263),(176,264),(147,265),(79,266),(161,267),(112,268),(182,269),(173,270),(169,271),(141,272),(119,273),(138,274),(189,275),(140,276),(149,277),(180,278),(167,279),(198,280),(176,281),(158,282),(184,283),(197,284),(173,285),(53,286),(188,287),(144,288),(133,289),(178,290),(195,291),(172,292),(67,293),(171,294),(177,295),(5,296),(181,297),(187,298)]
